397587769488 has 480 divisors, whose sum is σ = 1441214304000. Its totient is φ = 104851708416.

The previous prime is 397587769487. The next prime is 397587769499. The reversal of 397587769488 is 884967785793.

397587769488 is a `hidden beast` number, since 3 + 9 + 7 + 5 + 8 + 77 + 69 + 488 = 666.

It is not an unprimeable number, because it can be changed into a prime (397587769487) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 25033806 + ... + 25049682.

It is an arithmetic number, because the mean of its divisors is an integer number (3002529800).

Almost surely, 2^397587769488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397587769488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (720607152000).

397587769488 is an abundant number, since it is smaller than the sum of its proper divisors (1043626534512).

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

397587769488 is a wasteful number, since it uses less digits than its factorization.

397587769488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15941 (or 15902 counting only the distinct ones).

The product of its digits is 5120962560, while the sum is 81.

The spelling of 397587769488 in words is "three hundred ninety-seven billion, five hundred eighty-seven million, seven hundred sixty-nine thousand, four hundred eighty-eight".