396905402 has 8 divisors (see below), whose sum is σ = 626692800. Its totient is φ = 188007804.

The previous prime is 396905363. The next prime is 396905413. The reversal of 396905402 is 204509693.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (38), and also a Moran number because the ratio is a prime number: 10444879 = 396905402 / (3 + 9 + 6 + 9 + 0 + 5 + 4 + 0 + 2).

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, 5222402 + ... + 5222477.

It is an arithmetic number, because the mean of its divisors is an integer number (78336600).

Almost surely, 2^396905402 is an apocalyptic number.

396905402 is a deficient number, since it is larger than the sum of its proper divisors (229787398).

396905402 is a wasteful number, since it uses less digits than its factorization.

396905402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10444900.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 396905402 is about 19922.4848349798. The cubic root of 396905402 is about 734.9012791037.

The spelling of 396905402 in words is "three hundred ninety-six million, nine hundred five thousand, four hundred two".