397388527872 has 288 divisors, whose sum is σ = 1231344844800. Its totient is φ = 111430287360.

The previous prime is 397388527831. The next prime is 397388527931. The reversal of 397388527872 is 278725883793.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 397388527797 and 397388527806.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82804129 + ... + 82808927.

Almost surely, 2^397388527872 is an apocalyptic number.

397388527872 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397388527872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (615672422400).

397388527872 is an abundant number, since it is smaller than the sum of its proper divisors (833956316928).

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

397388527872 is a wasteful number, since it uses less digits than its factorization.

397388527872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5109 (or 5095 counting only the distinct ones).

The product of its digits is 284497920, while the sum is 69.

The spelling of 397388527872 in words is "three hundred ninety-seven billion, three hundred eighty-eight million, five hundred twenty-seven thousand, eight hundred seventy-two".