397453980 has 96 divisors (see below), whose sum is σ = 1387491840. Its totient is φ = 82586880.

The previous prime is 397453967. The next prime is 397453997. The reversal of 397453980 is 89354793.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38395 + ... + 47634.

It is an arithmetic number, because the mean of its divisors is an integer number (14453040).

Almost surely, 2^397453980 is an apocalyptic number.

397453980 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

397453980 is an abundant number, since it is smaller than the sum of its proper divisors (990037860).

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

397453980 is a wasteful number, since it uses less digits than its factorization.

397453980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86059 (or 86057 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 48.

The square root of 397453980 is about 19936.2478917172. The cubic root of 397453980 is about 735.2397015404.

The spelling of 397453980 in words is "three hundred ninety-seven million, four hundred fifty-three thousand, nine hundred eighty".