1390679874 has 16 divisors (see below), whose sum is σ = 3090399840. Its totient is φ = 463559940.

The previous prime is 1390679837. The next prime is 1390679903. The reversal of 1390679874 is 4789760931.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 25753331 = 1390679874 / (1 + 3 + 9 + 0 + 6 + 7 + 9 + 8 + 7 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 1390679874.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12876612 + ... + 12876719.

It is an arithmetic number, because the mean of its divisors is an integer number (193149990).

Almost surely, 2^1390679874 is an apocalyptic number.

1390679874 is an abundant number, since it is smaller than the sum of its proper divisors (1699719966).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1390679874 is a wasteful number, since it uses less digits than its factorization.

1390679874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25753342 (or 25753336 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The square root of 1390679874 is about 37291.8204704463. The cubic root of 1390679874 is about 1116.2009552564.

The spelling of 1390679874 in words is "one billion, three hundred ninety million, six hundred seventy-nine thousand, eight hundred seventy-four".