399168333 has 12 divisors (see below), whose sum is σ = 590639868. Its totient is φ = 259621440.

The previous prime is 399168317. The next prime is 399168361. The reversal of 399168333 is 333861993.

It can be written as a sum of positive squares in 2 ways, for example, as 117029124 + 282139209 = 10818^2 + 16797^2 .

It is not a de Polignac number, because 399168333 - 2⁴ = 399168317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399168373) 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 11 ways as a sum of consecutive naturals, for example, 540510 + ... + 541247.

It is an arithmetic number, because the mean of its divisors is an integer number (49219989).

Almost surely, 2^399168333 is an apocalyptic number.

It is an amenable number.

399168333 is a deficient number, since it is larger than the sum of its proper divisors (191471535).

399168333 is a wasteful number, since it uses less digits than its factorization.

399168333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081804 (or 1081801 counting only the distinct ones).

The product of its digits is 314928, while the sum is 45.

The square root of 399168333 is about 19979.1975064065. The cubic root of 399168333 is about 736.2952975071.

The spelling of 399168333 in words is "three hundred ninety-nine million, one hundred sixty-eight thousand, three hundred thirty-three".