399388080272 has 40 divisors (see below), whose sum is σ = 800771124600. Its totient is φ = 192742172672.

The previous prime is 399388080193. The next prime is 399388080277. The reversal of 399388080272 is 272080883993.

It can be written as a sum of positive squares in 4 ways, for example, as 9357853696 + 390030226576 = 96736^2 + 624524^2 .

It is not an unprimeable number, because it can be changed into a prime (399388080277) 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, 1226504 + ... + 1517592.

It is an arithmetic number, because the mean of its divisors is an integer number (20019278115).

Almost surely, 2^399388080272 is an apocalyptic number.

It is an amenable number.

399388080272 is an abundant number, since it is smaller than the sum of its proper divisors (401383044328).

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

399388080272 is a wasteful number, since it uses less digits than its factorization.

399388080272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294083 (or 294077 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 59.

The spelling of 399388080272 in words is "three hundred ninety-nine billion, three hundred eighty-eight million, eighty thousand, two hundred seventy-two".