397021712 has 20 divisors (see below), whose sum is σ = 794044416. Its totient is φ = 192107040.

The previous prime is 397021697. The next prime is 397021721. The reversal of 397021712 is 217120793.

397021712 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 399728 + ... + 400719.

Almost surely, 2^397021712 is an apocalyptic number.

It is an amenable number.

397021712 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

397021712 is a wasteful number, since it uses less digits than its factorization.

397021712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800486 (or 800480 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 397021712 is about 19925.4036847438. The cubic root of 397021712 is about 734.9730577688.

It can be divided in two parts, 39702 and 1712, that added together give a palindrome (41414).

The spelling of 397021712 in words is "three hundred ninety-seven million, twenty-one thousand, seven hundred twelve".