399547272960 has 432 divisors, whose sum is σ = 1587445292160. Its totient is φ = 91761500160.

The previous prime is 399547272907. The next prime is 399547272997. The reversal of 399547272960 is 69272745993.

399547272960 is a `hidden beast` number, since 3 + 9 + 9 + 5 + 472 + 72 + 96 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2324707 + ... + 2490653.

It is an arithmetic number, because the mean of its divisors is an integer number (3674641880).

Almost surely, 2^399547272960 is an apocalyptic number.

399547272960 is a gapful number since it is divisible by the number (30) 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 399547272960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (793722646080).

399547272960 is an abundant number, since it is smaller than the sum of its proper divisors (1187898019200).

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

399547272960 is a wasteful number, since it uses less digits than its factorization.

399547272960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166004 (or 165987 counting only the distinct ones).

The product of its (nonzero) digits is 51438240, while the sum is 63.

The spelling of 399547272960 in words is "three hundred ninety-nine billion, five hundred forty-seven million, two hundred seventy-two thousand, nine hundred sixty".