397015764 has 24 divisors (see below), whose sum is σ = 938098560. Its totient is φ = 130663104.

The previous prime is 397015763. The next prime is 397015781. The reversal of 397015764 is 467510793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397015763) 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, 208449 + ... + 210344.

It is an arithmetic number, because the mean of its divisors is an integer number (39087440).

Almost surely, 2^397015764 is an apocalyptic number.

It is an amenable number.

397015764 is an abundant number, since it is smaller than the sum of its proper divisors (541082796).

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

397015764 is a wasteful number, since it uses less digits than its factorization.

397015764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418879 (or 418877 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 42.

The square root of 397015764 is about 19925.2544274847. The cubic root of 397015764 is about 734.9693874057.

The spelling of 397015764 in words is "three hundred ninety-seven million, fifteen thousand, seven hundred sixty-four".