397012737 has 12 divisors (see below), whose sum is σ = 581848400. Its totient is φ = 240613560.

The previous prime is 397012727. The next prime is 397012751. The reversal of 397012737 is 737210793.

It is not a de Polignac number, because 397012737 - 2⁸ = 397012481 is a prime.

It is a super-2 number, since 2×397012737² = 315238226680462338, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 397012695 and 397012704.

It is not an unprimeable number, because it can be changed into a prime (397012727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 546487 + ... + 547212.

Almost surely, 2^397012737 is an apocalyptic number.

It is an amenable number.

397012737 is a deficient number, since it is larger than the sum of its proper divisors (184835663).

397012737 is a wasteful number, since it uses less digits than its factorization.

397012737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093724 (or 1093713 counting only the distinct ones).

The product of its (nonzero) digits is 55566, while the sum is 39.

The square root of 397012737 is about 19925.1784684605. The cubic root of 397012737 is about 734.9675195050.

The spelling of 397012737 in words is "three hundred ninety-seven million, twelve thousand, seven hundred thirty-seven".