399777330480 has 120 divisors (see below), whose sum is σ = 1362216572976. Its totient is φ = 96915709440.

The previous prime is 399777330467. The next prime is 399777330509. The reversal of 399777330480 is 84033777993.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (60).

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 23 ways as a sum of consecutive naturals, for example, 6854179 + ... + 6912258.

Almost surely, 2^399777330480 is an apocalyptic number.

399777330480 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

399777330480 is an abundant number, since it is smaller than the sum of its proper divisors (962439242496).

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

399777330480 is a wasteful number, since it uses less digits than its factorization.

399777330480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13766475 (or 13766458 counting only the distinct ones).

The product of its (nonzero) digits is 24004512, while the sum is 60.

The spelling of 399777330480 in words is "three hundred ninety-nine billion, seven hundred seventy-seven million, three hundred thirty thousand, four hundred eighty".