397283988 has 24 divisors (see below), whose sum is σ = 927319680. Its totient is φ = 132381760.

The previous prime is 397283983. The next prime is 397283989. The reversal of 397283988 is 889382793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397283983) 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, 59608 + ... + 65936.

It is an arithmetic number, because the mean of its divisors is an integer number (38638320).

Almost surely, 2^397283988 is an apocalyptic number.

It is an amenable number.

397283988 is an abundant number, since it is smaller than the sum of its proper divisors (530035692).

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

397283988 is a wasteful number, since it uses less digits than its factorization.

397283988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11567 (or 11565 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 57.

The square root of 397283988 is about 19931.9840457492. The cubic root of 397283988 is about 735.1348653441.

The spelling of 397283988 in words is "three hundred ninety-seven million, two hundred eighty-three thousand, nine hundred eighty-eight".