397651443 has 32 divisors (see below), whose sum is σ = 625121280. Its totient is φ = 220137600.

The previous prime is 397651433. The next prime is 397651481. The reversal of 397651443 is 344156793.

It is not a de Polignac number, because 397651443 - 2⁴ = 397651427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 397651395 and 397651404.

It is not an unprimeable number, because it can be changed into a prime (397651433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97693 + ... + 101681.

It is an arithmetic number, because the mean of its divisors is an integer number (19535040).

Almost surely, 2^397651443 is an apocalyptic number.

397651443 is a deficient number, since it is larger than the sum of its proper divisors (227469837).

397651443 is a wasteful number, since it uses less digits than its factorization.

397651443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4147.

The product of its digits is 272160, while the sum is 42.

The square root of 397651443 is about 19941.1996379355. The cubic root of 397651443 is about 735.3614419245.

The spelling of 397651443 in words is "three hundred ninety-seven million, six hundred fifty-one thousand, four hundred forty-three".