397624166 has 16 divisors (see below), whose sum is σ = 619612800. Its totient is φ = 191168640.

The previous prime is 397624141. The next prime is 397624189. The reversal of 397624166 is 661426793.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10691 + ... + 30158.

It is an arithmetic number, because the mean of its divisors is an integer number (38725800).

Almost surely, 2^397624166 is an apocalyptic number.

397624166 is a deficient number, since it is larger than the sum of its proper divisors (221988634).

397624166 is a wasteful number, since it uses less digits than its factorization.

397624166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41039.

The product of its digits is 326592, while the sum is 44.

The square root of 397624166 is about 19940.5156904229. The cubic root of 397624166 is about 735.3446274395.

The spelling of 397624166 in words is "three hundred ninety-seven million, six hundred twenty-four thousand, one hundred sixty-six".