397582507964 has 24 divisors (see below), whose sum is σ = 732424077840. Its totient is φ = 188319492864.

The previous prime is 397582507951. The next prime is 397582507969. The reversal of 397582507964 is 469705285793.

It is a self number, because there is not a number n which added to its sum of digits gives 397582507964.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397582507969) 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, 1622372 + ... + 1851284.

It is an arithmetic number, because the mean of its divisors is an integer number (30517669910).

Almost surely, 2^397582507964 is an apocalyptic number.

It is an amenable number.

397582507964 is a deficient number, since it is larger than the sum of its proper divisors (334841569876).

397582507964 is a wasteful number, since it uses less digits than its factorization.

397582507964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251789 (or 251787 counting only the distinct ones).

The product of its (nonzero) digits is 114307200, while the sum is 65.

The spelling of 397582507964 in words is "three hundred ninety-seven billion, five hundred eighty-two million, five hundred seven thousand, nine hundred sixty-four".