399464499 has 8 divisors (see below), whose sum is σ = 608707840. Its totient is φ = 228265416.

The previous prime is 399464479. The next prime is 399464503. The reversal of 399464499 is 994464993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 399464499 - 2⁸ = 399464243 is a prime.

It is a super-2 number, since 2×399464499² = 319143771922642002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (399464449) 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 7 ways as a sum of consecutive naturals, for example, 9511039 + ... + 9511080.

It is an arithmetic number, because the mean of its divisors is an integer number (76088480).

Almost surely, 2^399464499 is an apocalyptic number.

399464499 is a deficient number, since it is larger than the sum of its proper divisors (209243341).

399464499 is a wasteful number, since it uses less digits than its factorization.

399464499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19022129.

The product of its digits is 7558272, while the sum is 57.

The square root of 399464499 is about 19986.6079913526. The cubic root of 399464499 is about 736.4773524661.

The spelling of 399464499 in words is "three hundred ninety-nine million, four hundred sixty-four thousand, four hundred ninety-nine".