397659516 has 48 divisors (see below), whose sum is σ = 942299904. Its totient is φ = 130507776.

The previous prime is 397659503. The next prime is 397659541. The reversal of 397659516 is 615956793.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 237715 + ... + 239381.

It is an arithmetic number, because the mean of its divisors is an integer number (19631248).

Almost surely, 2^397659516 is an apocalyptic number.

It is an amenable number.

397659516 is an abundant number, since it is smaller than the sum of its proper divisors (544640388).

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

397659516 is a wasteful number, since it uses less digits than its factorization.

397659516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1970 (or 1968 counting only the distinct ones).

The product of its digits is 1530900, while the sum is 51.

The square root of 397659516 is about 19941.4020570270. The cubic root of 397659516 is about 735.3664182531.

The spelling of 397659516 in words is "three hundred ninety-seven million, six hundred fifty-nine thousand, five hundred sixteen".