396439604 has 12 divisors (see below), whose sum is σ = 756839328. Its totient is φ = 180199800.

The previous prime is 396439597. The next prime is 396439613. The reversal of 396439604 is 406934693.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 9009991 = 396439604 / (3 + 9 + 6 + 4 + 3 + 9 + 6 + 0 + 4).

It is a congruent number.

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, 4504952 + ... + 4505039.

It is an arithmetic number, because the mean of its divisors is an integer number (63069944).

Almost surely, 2^396439604 is an apocalyptic number.

It is an amenable number.

396439604 is a deficient number, since it is larger than the sum of its proper divisors (360399724).

396439604 is a wasteful number, since it uses less digits than its factorization.

396439604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9010006 (or 9010004 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 44.

The square root of 396439604 is about 19910.7911445025. The cubic root of 396439604 is about 734.6136794704.

The spelling of 396439604 in words is "three hundred ninety-six million, four hundred thirty-nine thousand, six hundred four".