1390 can refer both to the natural number that follows 1389 and precedes 1391, and to the calendar year falling in the late 14th century. As a numeral it has distinct mathematical attributes; as a year it sits within a period of political upheaval, religious division, and cultural change across Eurasia known broadly as the Late Middle Ages.

Mathematical properties

The integer 1390 is even and composite. Its prime factorization is 2 × 5 × 139, where 139 is a prime number. In Roman numerals it is written MCCCXC. In binary notation 1390 is 10101101110. The proper divisors of 1390 add to a total smaller than the number itself, so 1390 is classified as a deficient number.

Historical context of the year 1390

The year 1390 falls into a transitional era across much of Eurasia. In Western Europe the long-running conflicts and dynastic struggles of the Late Middle Ages continued—this period includes the Hundred Years' War between England and France and the papal Western Schism, which divided allegiance within the church. In Eastern Europe and the Balkans the Ottoman state was consolidating its presence after late-14th-century campaigns. In Central Asia the successors of Timur (Tamerlane) and related polities were shaping regional politics. Across these regions, royal courts, military campaigns, and diplomatic contacts defined much of public life.

Culture, learning, and notable figures

Intellectual and artistic life in and around 1390 combined medieval traditions with early signs of change. Gothic architecture and manuscript illumination remained prominent, while the seeds of the Italian Renaissance were taking root in city-states such as Florence. In literature, major vernacular works had been produced or were circulating: Geoffrey Chaucer’s Canterbury Tales had been composed around this broader period, and Persian poetry by figures such as Hafez is commonly dated to around the late 14th century. Scientific and technological knowledge advanced unevenly; craft technologies, navigational devices, and practical mathematics were important drivers of change.

Uses, significance and distinctions

  • As a number, 1390 appears in arithmetic, coding and enumeration without special mathematical status beyond its factorization and classification as deficient.
  • As a historical marker, 1390 helps situate events and developments within the broader trajectory of the Late Middle Ages and the shift toward early modern patterns of statecraft and culture.
  • Dates from this period are frequently approximated or reconstructed from chronicles, legal records, and literary sources, so precise dating for many events or lives may be uncertain.

Whether treated as an integer or as a point in time, 1390 connects to larger themes: multiplicative structure and representation in mathematics, and in history the interaction of warfare, religion, trade and cultural production during a century of significant transformation.