399604754 has 16 divisors (see below), whose sum is σ = 635040000. Its totient is φ = 187938624.

The previous prime is 399604753. The next prime is 399604837. The reversal of 399604754 is 457406993.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 399604699 and 399604708.

It is not an unprimeable number, because it can be changed into a prime (399604753) 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, 100007 + ... + 103925.

It is an arithmetic number, because the mean of its divisors is an integer number (39690000).

Almost surely, 2^399604754 is an apocalyptic number.

399604754 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

399604754 is a deficient number, since it is larger than the sum of its proper divisors (235435246).

399604754 is a wasteful number, since it uses less digits than its factorization.

399604754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6937.

The product of its (nonzero) digits is 816480, while the sum is 47.

The square root of 399604754 is about 19990.1164078652. The cubic root of 399604754 is about 736.5635366323.

The spelling of 399604754 in words is "three hundred ninety-nine million, six hundred four thousand, seven hundred fifty-four".