399318627 has 32 divisors (see below), whose sum is σ = 585391104. Its totient is φ = 241113600.

The previous prime is 399318583. The next prime is 399318637. The reversal of 399318627 is 726813993.

It is not a de Polignac number, because 399318627 - 2⁷ = 399318499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (399318637) 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 31 ways as a sum of consecutive naturals, for example, 144852 + ... + 147582.

It is an arithmetic number, because the mean of its divisors is an integer number (18293472).

Almost surely, 2^399318627 is an apocalyptic number.

399318627 is a deficient number, since it is larger than the sum of its proper divisors (186072477).

399318627 is a wasteful number, since it uses less digits than its factorization.

399318627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2859.

The product of its digits is 489888, while the sum is 48.

The square root of 399318627 is about 19982.9584146092. The cubic root of 399318627 is about 736.3876953509.

The spelling of 399318627 in words is "three hundred ninety-nine million, three hundred eighteen thousand, six hundred twenty-seven".