399164515 has 8 divisors (see below), whose sum is σ = 480250368. Its totient is φ = 318496320.

The previous prime is 399164503. The next prime is 399164533. The reversal of 399164515 is 515461993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 399164515 - 2¹³ = 399156323 is a prime.

It is a Duffinian number.

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, 102306 + ... + 106135.

It is an arithmetic number, because the mean of its divisors is an integer number (60031296).

Almost surely, 2^399164515 is an apocalyptic number.

399164515 is a deficient number, since it is larger than the sum of its proper divisors (81085853).

399164515 is a wasteful number, since it uses less digits than its factorization.

399164515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208829.

The product of its digits is 145800, while the sum is 43.

The square root of 399164515 is about 19979.1019567948. The cubic root of 399164515 is about 736.2929499726.

The spelling of 399164515 in words is "three hundred ninety-nine million, one hundred sixty-four thousand, five hundred fifteen".