397704936 has 64 divisors (see below), whose sum is σ = 1077278400. Its totient is φ = 121863168.

The previous prime is 397704913. The next prime is 397704977. The reversal of 397704936 is 639407793.

It is a super-3 number, since 3×397704936³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 6210 + ... + 28878.

It is an arithmetic number, because the mean of its divisors is an integer number (16832475).

Almost surely, 2^397704936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397704936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (538639200).

397704936 is an abundant number, since it is smaller than the sum of its proper divisors (679573464).

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

397704936 is a wasteful number, since it uses less digits than its factorization.

397704936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22738 (or 22734 counting only the distinct ones).

The product of its (nonzero) digits is 857304, while the sum is 48.

The square root of 397704936 is about 19942.5408611842. The cubic root of 397704936 is about 735.3944146251.

The spelling of 397704936 in words is "three hundred ninety-seven million, seven hundred four thousand, nine hundred thirty-six".