397911260 has 24 divisors (see below), whose sum is σ = 836541216. Its totient is φ = 158987840.

The previous prime is 397911253. The next prime is 397911263. The reversal of 397911260 is 62119793.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397911263) 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, 8249 + ... + 29391.

It is an arithmetic number, because the mean of its divisors is an integer number (34855884).

Almost surely, 2^397911260 is an apocalyptic number.

It is an amenable number.

397911260 is an abundant number, since it is smaller than the sum of its proper divisors (438629956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

397911260 is a wasteful number, since it uses less digits than its factorization.

397911260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22093 (or 22091 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 397911260 is about 19947.7131521385. The cubic root of 397911260 is about 735.5215635677.

The spelling of 397911260 in words is "three hundred ninety-seven million, nine hundred eleven thousand, two hundred sixty".