1390426536 has 32 divisors (see below), whose sum is σ = 3659018400. Its totient is φ = 439081920.

The previous prime is 1390426511. The next prime is 1390426603. The reversal of 1390426536 is 6356240931.

It is a junction number, because it is equal to n+sod(n) for n = 1390426494 and 1390426503.

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, 1524135 + ... + 1525046.

It is an arithmetic number, because the mean of its divisors is an integer number (114344325).

Almost surely, 2^1390426536 is an apocalyptic number.

It is an amenable number.

1390426536 is an abundant number, since it is smaller than the sum of its proper divisors (2268591864).

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

1390426536 is a wasteful number, since it uses less digits than its factorization.

1390426536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3049209 (or 3049205 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 1390426536 is about 37288.4236191341. The cubic root of 1390426536 is about 1116.1331722735.

The spelling of 1390426536 in words is "one billion, three hundred ninety million, four hundred twenty-six thousand, five hundred thirty-six".