396717966 has 32 divisors (see below), whose sum is σ = 882706080. Its totient is φ = 132072768.

The previous prime is 396717949. The next prime is 396717973. The reversal of 396717966 is 669717693.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 43170 + ... + 51546.

It is an arithmetic number, because the mean of its divisors is an integer number (27584565).

Almost surely, 2^396717966 is an apocalyptic number.

396717966 is an abundant number, since it is smaller than the sum of its proper divisors (485988114).

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

396717966 is a wasteful number, since it uses less digits than its factorization.

396717966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9265 (or 9259 counting only the distinct ones).

The product of its digits is 2571912, while the sum is 54.

The square root of 396717966 is about 19917.7801473959. The cubic root of 396717966 is about 734.7855767689.

The spelling of 396717966 in words is "three hundred ninety-six million, seven hundred seventeen thousand, nine hundred sixty-six".