396491772 has 48 divisors (see below), whose sum is σ = 975484160. Its totient is φ = 124996608.

The previous prime is 396491759. The next prime is 396491783. The reversal of 396491772 is 277194693.

It is a happy number.

It is a congruent number.

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, 186588 + ... + 188700.

Almost surely, 2^396491772 is an apocalyptic number.

It is an amenable number.

396491772 is an abundant number, since it is smaller than the sum of its proper divisors (578992388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

396491772 is a wasteful number, since it uses less digits than its factorization.

396491772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2962 (or 2960 counting only the distinct ones).

The product of its digits is 571536, while the sum is 48.

The square root of 396491772 is about 19912.1011447813. The cubic root of 396491772 is about 734.6459009783.

The spelling of 396491772 in words is "three hundred ninety-six million, four hundred ninety-one thousand, seven hundred seventy-two".