397984260 has 48 divisors (see below), whose sum is σ = 1173009600. Its totient is φ = 100543104.

The previous prime is 397984219. The next prime is 397984277. The reversal of 397984260 is 62489793.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173415 + ... + 175694.

It is an arithmetic number, because the mean of its divisors is an integer number (24437700).

Almost surely, 2^397984260 is an apocalyptic number.

397984260 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

397984260 is an abundant number, since it is smaller than the sum of its proper divisors (775025340).

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

397984260 is a wasteful number, since it uses less digits than its factorization.

397984260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349140 (or 349138 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 48.

The square root of 397984260 is about 19949.5428519052. The cubic root of 397984260 is about 735.5665399200.

The spelling of 397984260 in words is "three hundred ninety-seven million, nine hundred eighty-four thousand, two hundred sixty".