399595470 has 32 divisors (see below), whose sum is σ = 960331680. Its totient is φ = 106414080.

The previous prime is 399595463. The next prime is 399595481. The reversal of 399595470 is 74595993.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14410 + ... + 31730.

It is an arithmetic number, because the mean of its divisors is an integer number (30010365).

Almost surely, 2^399595470 is an apocalyptic number.

399595470 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

399595470 is an abundant number, since it is smaller than the sum of its proper divisors (560736210).

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

399595470 is a wasteful number, since it uses less digits than its factorization.

399595470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18100.

The product of its (nonzero) digits is 1530900, while the sum is 51.

The square root of 399595470 is about 19989.8841917606. The cubic root of 399595470 is about 736.5578324051.

It can be divided in two parts, 399595 and 470, that added together give a triangular number (400065 = T₈₉₄).

The spelling of 399595470 in words is "three hundred ninety-nine million, five hundred ninety-five thousand, four hundred seventy".