396993715 has 4 divisors (see below), whose sum is σ = 476392464. Its totient is φ = 317594968.

The previous prime is 396993689. The next prime is 396993749. The reversal of 396993715 is 517399693.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 396993715 - 2¹⁵ = 396960947 is a prime.

It is a Duffinian 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, 39699367 + ... + 39699376.

It is an arithmetic number, because the mean of its divisors is an integer number (119098116).

Almost surely, 2^396993715 is an apocalyptic number.

396993715 is a deficient number, since it is larger than the sum of its proper divisors (79398749).

396993715 is an equidigital number, since it uses as much as digits as its factorization.

396993715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79398748.

The product of its digits is 1377810, while the sum is 52.

The square root of 396993715 is about 19924.7011269931. The cubic root of 396993715 is about 734.9557811953.

The spelling of 396993715 in words is "three hundred ninety-six million, nine hundred ninety-three thousand, seven hundred fifteen".