399578906700 has 108 divisors (see below), whose sum is σ = 1253921749080. Its totient is φ = 106429835520.

The previous prime is 399578906677. The next prime is 399578906731. The reversal of 399578906700 is 7609875993.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 512271 + ... + 1030329.

Almost surely, 2^399578906700 is an apocalyptic number.

399578906700 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 399578906700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (626960874540).

399578906700 is an abundant number, since it is smaller than the sum of its proper divisors (854342842380).

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

399578906700 is a wasteful number, since it uses less digits than its factorization.

399578906700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518936 (or 518926 counting only the distinct ones).

The product of its (nonzero) digits is 25719120, while the sum is 63.

The spelling of 399578906700 in words is "three hundred ninety-nine billion, five hundred seventy-eight million, nine hundred six thousand, seven hundred".