397903260 has 24 divisors (see below), whose sum is σ = 1114129296. Its totient is φ = 106107520.

The previous prime is 397903201. The next prime is 397903267. The reversal of 397903260 is 62309793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397903267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3315801 + ... + 3315920.

It is an arithmetic number, because the mean of its divisors is an integer number (46422054).

Almost surely, 2^397903260 is an apocalyptic number.

397903260 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

397903260 is an abundant number, since it is smaller than the sum of its proper divisors (716226036).

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

397903260 is a wasteful number, since it uses less digits than its factorization.

397903260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6631733 (or 6631731 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 39.

The square root of 397903260 is about 19947.5126268916. The cubic root of 397903260 is about 735.5166343180.

The spelling of 397903260 in words is "three hundred ninety-seven million, nine hundred three thousand, two hundred sixty".