399161315 has 16 divisors (see below), whose sum is σ = 551102400. Its totient is φ = 271870080.

The previous prime is 399161263. The next prime is 399161339. The reversal of 399161315 is 513161993.

It is not a de Polignac number, because 399161315 - 2¹² = 399157219 is a prime.

It is a super-3 number, since 3×399161315³ (a number of 27 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33056 + ... + 43485.

It is an arithmetic number, because the mean of its divisors is an integer number (34443900).

Almost surely, 2^399161315 is an apocalyptic number.

399161315 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

399161315 is a deficient number, since it is larger than the sum of its proper divisors (151941085).

399161315 is a wasteful number, since it uses less digits than its factorization.

399161315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76702.

The product of its digits is 21870, while the sum is 38.

The square root of 399161315 is about 19979.0218729546. The cubic root of 399161315 is about 736.2909824098.

The spelling of 399161315 in words is "three hundred ninety-nine million, one hundred sixty-one thousand, three hundred fifteen".