397353537 has 24 divisors (see below), whose sum is σ = 656545344. Its totient is φ = 226852704.

The previous prime is 397353533. The next prime is 397353569. The reversal of 397353537 is 735353793.

It is not a de Polignac number, because 397353537 - 2² = 397353533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 397353492 and 397353501.

It is not an unprimeable number, because it can be changed into a prime (397353533) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91303 + ... + 95555.

It is an arithmetic number, because the mean of its divisors is an integer number (27356056).

Almost surely, 2^397353537 is an apocalyptic number.

It is an amenable number.

397353537 is a deficient number, since it is larger than the sum of its proper divisors (259191807).

397353537 is a wasteful number, since it uses less digits than its factorization.

397353537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5749 (or 5746 counting only the distinct ones).

The product of its digits is 893025, while the sum is 45.

The square root of 397353537 is about 19933.7286276301. The cubic root of 397353537 is about 735.1777606978.

The spelling of 397353537 in words is "three hundred ninety-seven million, three hundred fifty-three thousand, five hundred thirty-seven".