399057575 has 48 divisors (see below), whose sum is σ = 618246144. Its totient is φ = 249177600.

The previous prime is 399057553. The next prime is 399057623. The reversal of 399057575 is 575750993.

It is not a de Polignac number, because 399057575 - 2⁸ = 399057319 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 90062 + ... + 94388.

It is an arithmetic number, because the mean of its divisors is an integer number (12880128).

Almost surely, 2^399057575 is an apocalyptic number.

399057575 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

399057575 is a deficient number, since it is larger than the sum of its proper divisors (219188569).

399057575 is a wasteful number, since it uses less digits than its factorization.

399057575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4392 (or 4387 counting only the distinct ones).

The product of its (nonzero) digits is 1488375, while the sum is 50.

The square root of 399057575 is about 19976.4254810514. The cubic root of 399057575 is about 736.2271907865.

The spelling of 399057575 in words is "three hundred ninety-nine million, fifty-seven thousand, five hundred seventy-five".