390749004 has 36 divisors (see below), whose sum is σ = 989508520. Its totient is φ = 130014720.

The previous prime is 390748999. The next prime is 390749057. The reversal of 390749004 is 400947093.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a self number, because there is not a number n which added to its sum of digits gives 390749004.

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, 11052 + ... + 30060.

Almost surely, 2^390749004 is an apocalyptic number.

It is an amenable number.

390749004 is an abundant number, since it is smaller than the sum of its proper divisors (598759516).

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

390749004 is a wasteful number, since it uses less digits than its factorization.

390749004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19590 (or 19585 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 390749004 is about 19767.3722077569. The cubic root of 390749004 is about 731.0817788805.

The spelling of 390749004 in words is "three hundred ninety million, seven hundred forty-nine thousand, four".