1390308424 has 16 divisors (see below), whose sum is σ = 2645737200. Its totient is φ = 684778512.

The previous prime is 1390308389. The next prime is 1390308431. The reversal of 1390308424 is 4248030931.

It is a self number, because there is not a number n which added to its sum of digits gives 1390308424.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1296394 + ... + 1297465.

It is an arithmetic number, because the mean of its divisors is an integer number (165358575).

Almost surely, 2^1390308424 is an apocalyptic number.

It is an amenable number.

1390308424 is a deficient number, since it is larger than the sum of its proper divisors (1255428776).

1390308424 is a wasteful number, since it uses less digits than its factorization.

1390308424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2593932 (or 2593928 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 1390308424 is about 37286.8398231869. The cubic root of 1390308424 is about 1116.1015674744.

The spelling of 1390308424 in words is "one billion, three hundred ninety million, three hundred eight thousand, four hundred twenty-four".