1390664304 has 60 divisors (see below), whose sum is σ = 3899340952. Its totient is φ = 462672000.

The previous prime is 1390664293. The next prime is 1390664369. The reversal of 1390664304 is 4034660931.

1390664304 is a `hidden beast` number, since 1 + 3 + 9 + 0 + 6 + 643 + 0 + 4 = 666.

1390664304 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68979 + ... + 86829.

Almost surely, 2^1390664304 is an apocalyptic number.

It is an amenable number.

1390664304 is an abundant number, since it is smaller than the sum of its proper divisors (2508676648).

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

1390664304 is a wasteful number, since it uses less digits than its factorization.

1390664304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18406 (or 18397 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 1390664304 is about 37291.6117109465. The cubic root of 1390664304 is about 1116.1967895928.

It can be divided in two parts, 13906 and 64304, that added together give a triangular number (78210 = T₃₉₅).

The spelling of 1390664304 in words is "one billion, three hundred ninety million, six hundred sixty-four thousand, three hundred four".