397895697 has 12 divisors (see below), whose sum is σ = 575289780. Its totient is φ = 265009248.

The previous prime is 397895681. The next prime is 397895711. The reversal of 397895697 is 796598793.

It can be written as a sum of positive squares in 2 ways, for example, as 227436561 + 170459136 = 15081^2 + 13056^2 .

It is not a de Polignac number, because 397895697 - 2⁴ = 397895681 is a prime.

It is a super-2 number, since 2×397895697² = 316641971382231618, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (397895627) 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, 11058 + ... + 30299.

It is an arithmetic number, because the mean of its divisors is an integer number (47940815).

Almost surely, 2^397895697 is an apocalyptic number.

It is an amenable number.

397895697 is a deficient number, since it is larger than the sum of its proper divisors (177394083).

397895697 is a wasteful number, since it uses less digits than its factorization.

397895697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42432 (or 42429 counting only the distinct ones).

The product of its digits is 25719120, while the sum is 63.

The square root of 397895697 is about 19947.3230534826. The cubic root of 397895697 is about 735.5119742677.

The spelling of 397895697 in words is "three hundred ninety-seven million, eight hundred ninety-five thousand, six hundred ninety-seven".