397364357 has 8 divisors (see below), whose sum is σ = 428706936. Its totient is φ = 366132672.

The previous prime is 397364327. The next prime is 397364371. The reversal of 397364357 is 753463793.

It is a Cunningham number, because it is equal to 19934²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 34880836 + 362483521 = 5906^2 + 19039^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397364357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397364327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20198 + ... + 34679.

It is an arithmetic number, because the mean of its divisors is an integer number (53588367).

Almost surely, 2^397364357 is an apocalyptic number.

It is an amenable number.

397364357 is a deficient number, since it is larger than the sum of its proper divisors (31342579).

397364357 is a wasteful number, since it uses less digits than its factorization.

397364357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55447.

The product of its digits is 1428840, while the sum is 47.

The square root of 397364357 is about 19934.0000250828. Note that the first 4 decimals coincide. The cubic root of 397364357 is about 735.1844336397.

The spelling of 397364357 in words is "three hundred ninety-seven million, three hundred sixty-four thousand, three hundred fifty-seven".