397659144 has 32 divisors (see below), whose sum is σ = 1037373120. Its totient is φ = 126789696.

The previous prime is 397659139. The next prime is 397659149. The reversal of 397659144 is 441956793.

It is an interprime number because it is at equal distance from previous prime (397659139) and next prime (397659149).

It is a junction number, because it is equal to n+sod(n) for n = 397659093 and 397659102.

It is not an unprimeable number, because it can be changed into a prime (397659149) 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, 359647 + ... + 360750.

It is an arithmetic number, because the mean of its divisors is an integer number (32417910).

Almost surely, 2^397659144 is an apocalyptic number.

It is an amenable number.

397659144 is an abundant number, since it is smaller than the sum of its proper divisors (639713976).

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

397659144 is a wasteful number, since it uses less digits than its factorization.

397659144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720429 (or 720425 counting only the distinct ones).

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

The square root of 397659144 is about 19941.3927296967. The cubic root of 397659144 is about 735.3661889477.

The spelling of 397659144 in words is "three hundred ninety-seven million, six hundred fifty-nine thousand, one hundred forty-four".