399377100 has 72 divisors (see below), whose sum is σ = 1157582160. Its totient is φ = 106311680.

The previous prime is 399377081. The next prime is 399377113. The reversal of 399377100 is 1773993.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 277984 + ... + 279416.

It is an arithmetic number, because the mean of its divisors is an integer number (16077530).

Almost surely, 2^399377100 is an apocalyptic number.

399377100 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

399377100 is an abundant number, since it is smaller than the sum of its proper divisors (758205060).

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

399377100 is a wasteful number, since it uses less digits than its factorization.

399377100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2379 (or 2372 counting only the distinct ones).

The product of its (nonzero) digits is 35721, while the sum is 39.

The square root of 399377100 is about 19984.4214327060. The cubic root of 399377100 is about 736.4236371554.

The spelling of 399377100 in words is "three hundred ninety-nine million, three hundred seventy-seven thousand, one hundred".