396921232 has 20 divisors (see below), whose sum is σ = 769435996. Its totient is φ = 198357120.

The previous prime is 396921227. The next prime is 396921233. The reversal of 396921232 is 232129693.

It can be written as a sum of positive squares in 2 ways, for example, as 111851776 + 285069456 = 10576^2 + 16884^2 .

It is a junction number, because it is equal to n+sod(n) for n = 396921191 and 396921200.

It is not an unprimeable number, because it can be changed into a prime (396921233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32158 + ... + 42754.

Almost surely, 2^396921232 is an apocalyptic number.

It is an amenable number.

396921232 is a deficient number, since it is larger than the sum of its proper divisors (372514764).

396921232 is a wasteful number, since it uses less digits than its factorization.

396921232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12946 (or 12940 counting only the distinct ones).

The product of its digits is 34992, while the sum is 37.

The square root of 396921232 is about 19922.8821208178. The cubic root of 396921232 is about 734.9110491333.

The spelling of 396921232 in words is "three hundred ninety-six million, nine hundred twenty-one thousand, two hundred thirty-two".