399544130 has 16 divisors (see below), whose sum is σ = 738617400. Its totient is φ = 155498112.

The previous prime is 399544129. The next prime is 399544153. The reversal of 399544130 is 31445993.

It can be written as a sum of positive squares in 4 ways, for example, as 368217721 + 31326409 = 19189^2 + 5597^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 539555 + ... + 540294.

Almost surely, 2^399544130 is an apocalyptic number.

399544130 is a deficient number, since it is larger than the sum of its proper divisors (339073270).

399544130 is a wasteful number, since it uses less digits than its factorization.

399544130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079893.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 399544130 is about 19988.6000010006. The cubic root of 399544130 is about 736.5262867533.

The spelling of 399544130 in words is "three hundred ninety-nine million, five hundred forty-four thousand, one hundred thirty".