397073688 has 32 divisors (see below), whose sum is σ = 1082928960. Its totient is φ = 120325280.

The previous prime is 397073681. The next prime is 397073693. The reversal of 397073688 is 886370793.

It is a self number, because there is not a number n which added to its sum of digits gives 397073688.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397073681) 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, 751770 + ... + 752297.

It is an arithmetic number, because the mean of its divisors is an integer number (33841530).

Almost surely, 2^397073688 is an apocalyptic number.

It is an amenable number.

397073688 is an abundant number, since it is smaller than the sum of its proper divisors (685855272).

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

397073688 is a wasteful number, since it uses less digits than its factorization.

397073688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1504087 (or 1504083 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 51.

The square root of 397073688 is about 19926.7079067266. The cubic root of 397073688 is about 735.0051293085.

The spelling of 397073688 in words is "three hundred ninety-seven million, seventy-three thousand, six hundred eighty-eight".