396401697 has 24 divisors (see below), whose sum is σ = 581817600. Its totient is φ = 260028288.

The previous prime is 396401659. The next prime is 396401737. The reversal of 396401697 is 796104693.

It is not a de Polignac number, because 396401697 - 2⁶ = 396401633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (396401657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 254473 + ... + 256025.

It is an arithmetic number, because the mean of its divisors is an integer number (24242400).

Almost surely, 2^396401697 is an apocalyptic number.

It is an amenable number.

396401697 is a deficient number, since it is larger than the sum of its proper divisors (185415903).

396401697 is a wasteful number, since it uses less digits than its factorization.

396401697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1997 (or 1994 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 396401697 is about 19909.8392007570. The cubic root of 396401697 is about 734.5902644801.

The spelling of 396401697 in words is "three hundred ninety-six million, four hundred one thousand, six hundred ninety-seven".