396979715 has 16 divisors (see below), whose sum is σ = 520439040. Its totient is φ = 288292320.

The previous prime is 396979703. The next prime is 396979721. The reversal of 396979715 is 517979693.

It is not a de Polignac number, because 396979715 - 2¹⁴ = 396963331 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35762 + ... + 45528.

It is an arithmetic number, because the mean of its divisors is an integer number (32527440).

Almost surely, 2^396979715 is an apocalyptic number.

396979715 is a deficient number, since it is larger than the sum of its proper divisors (123459325).

396979715 is a wasteful number, since it uses less digits than its factorization.

396979715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10522.

The product of its digits is 3214890, while the sum is 56.

The square root of 396979715 is about 19924.3498011855. The cubic root of 396979715 is about 734.9471416782.

The spelling of 396979715 in words is "three hundred ninety-six million, nine hundred seventy-nine thousand, seven hundred fifteen".