399437315 has 8 divisors (see below), whose sum is σ = 479548608. Its totient is φ = 319400640.

The previous prime is 399437281. The next prime is 399437327. The reversal of 399437315 is 513734993.

It is a happy number.

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

It is not a de Polignac number, because 399437315 - 2¹⁰ = 399436291 is a prime.

It is a super-2 number, since 2×399437315² = 319100337228818450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6107 + ... + 28916.

It is an arithmetic number, because the mean of its divisors is an integer number (59943576).

Almost surely, 2^399437315 is an apocalyptic number.

399437315 is a deficient number, since it is larger than the sum of its proper divisors (80111293).

399437315 is a wasteful number, since it uses less digits than its factorization.

399437315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37309.

The product of its digits is 306180, while the sum is 44.

The square root of 399437315 is about 19985.9279244172. The cubic root of 399437315 is about 736.4606460550.

The spelling of 399437315 in words is "three hundred ninety-nine million, four hundred thirty-seven thousand, three hundred fifteen".