1390469379 has 16 divisors (see below), whose sum is σ = 1999722144. Its totient is φ = 854323200.

The previous prime is 1390469303. The next prime is 1390469383. The reversal of 1390469379 is 9739640931.

It is not a de Polignac number, because 1390469379 - 2⁸ = 1390469123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1390469779) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2812 + ... + 52809.

It is an arithmetic number, because the mean of its divisors is an integer number (124982634).

Almost surely, 2^1390469379 is an apocalyptic number.

1390469379 is a deficient number, since it is larger than the sum of its proper divisors (609252765).

1390469379 is a wasteful number, since it uses less digits than its factorization.

1390469379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56278.

The product of its (nonzero) digits is 1102248, while the sum is 51.

The square root of 1390469379 is about 37288.9980959532. The cubic root of 1390469379 is about 1116.1446359027.

The spelling of 1390469379 in words is "one billion, three hundred ninety million, four hundred sixty-nine thousand, three hundred seventy-nine".