399344464770 has 64 divisors (see below), whose sum is σ = 974347280640. Its totient is φ = 104723654400.

The previous prime is 399344464763. The next prime is 399344464787. The reversal of 399344464770 is 77464443993.

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, 9606891 + ... + 9648369.

It is an arithmetic number, because the mean of its divisors is an integer number (15224176260).

Almost surely, 2^399344464770 is an apocalyptic number.

399344464770 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

399344464770 is an abundant number, since it is smaller than the sum of its proper divisors (575002815870).

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

399344464770 is a wasteful number, since it uses less digits than its factorization.

399344464770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46811.

The product of its (nonzero) digits is 54867456, while the sum is 60.

The spelling of 399344464770 in words is "three hundred ninety-nine billion, three hundred forty-four million, four hundred sixty-four thousand, seven hundred seventy".