399370323 has 16 divisors (see below), whose sum is σ = 587433600. Its totient is φ = 239321280.

The previous prime is 399370319. The next prime is 399370333. The reversal of 399370323 is 323073993.

It is not a de Polignac number, because 399370323 - 2² = 399370319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (399370333) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 65053 + ... + 70926.

It is an arithmetic number, because the mean of its divisors is an integer number (36714600).

Almost surely, 2^399370323 is an apocalyptic number.

399370323 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

399370323 is a deficient number, since it is larger than the sum of its proper divisors (188063277).

399370323 is a wasteful number, since it uses less digits than its factorization.

399370323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136082.

The product of its (nonzero) digits is 91854, while the sum is 39.

The square root of 399370323 is about 19984.2518749139. The cubic root of 399370323 is about 736.4194716928.

The spelling of 399370323 in words is "three hundred ninety-nine million, three hundred seventy thousand, three hundred twenty-three".