399273604 has 24 divisors (see below), whose sum is σ = 707168448. Its totient is φ = 197234400.

The previous prime is 399273593. The next prime is 399273607. The reversal of 399273604 is 406372993.

It is a super-2 number, since 2×399273604² = 318838821702297632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (399273607) 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, 275209 + ... + 276655.

It is an arithmetic number, because the mean of its divisors is an integer number (29465352).

Almost surely, 2^399273604 is an apocalyptic number.

It is an amenable number.

399273604 is a deficient number, since it is larger than the sum of its proper divisors (307894844).

399273604 is a wasteful number, since it uses less digits than its factorization.

399273604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2235 (or 2233 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 43.

The square root of 399273604 is about 19981.8318479563. The cubic root of 399273604 is about 736.3600185141.

The spelling of 399273604 in words is "three hundred ninety-nine million, two hundred seventy-three thousand, six hundred four".