397511244 has 36 divisors (see below), whose sum is σ = 1082115216. Its totient is φ = 122311008.

The previous prime is 397511209. The next prime is 397511249. The reversal of 397511244 is 442115793.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 397511199 and 397511208.

It is not an unprimeable number, because it can be changed into a prime (397511249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 424224 + ... + 425159.

It is an arithmetic number, because the mean of its divisors is an integer number (30058756).

Almost surely, 2^397511244 is an apocalyptic number.

It is an amenable number.

397511244 is an abundant number, since it is smaller than the sum of its proper divisors (684603972).

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

397511244 is a wasteful number, since it uses less digits than its factorization.

397511244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849406 (or 849401 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 397511244 is about 19937.6840179596. The cubic root of 397511244 is about 735.2750102357.

The spelling of 397511244 in words is "three hundred ninety-seven million, five hundred eleven thousand, two hundred forty-four".