399337934 has 16 divisors (see below), whose sum is σ = 642433680. Its totient is φ = 185590080.

The previous prime is 399337931. The next prime is 399337979. The reversal of 399337934 is 439733993.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399337931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97127 + ... + 101154.

It is an arithmetic number, because the mean of its divisors is an integer number (40152105).

Almost surely, 2^399337934 is an apocalyptic number.

399337934 is a deficient number, since it is larger than the sum of its proper divisors (243095746).

399337934 is a wasteful number, since it uses less digits than its factorization.

399337934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198355.

The product of its digits is 1653372, while the sum is 50.

The square root of 399337934 is about 19983.4414953981. The cubic root of 399337934 is about 736.3995632404.

The spelling of 399337934 in words is "three hundred ninety-nine million, three hundred thirty-seven thousand, nine hundred thirty-four".