399879458 has 8 divisors (see below), whose sum is σ = 654348240. Its totient is φ = 181763380.

The previous prime is 399879451. The next prime is 399879481. The reversal of 399879458 is 854978993.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 399879458.

It is not an unprimeable number, because it can be changed into a prime (399879451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9088148 + ... + 9088191.

It is an arithmetic number, because the mean of its divisors is an integer number (81793530).

Almost surely, 2^399879458 is an apocalyptic number.

399879458 is a deficient number, since it is larger than the sum of its proper divisors (254468782).

399879458 is a wasteful number, since it uses less digits than its factorization.

399879458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18176352.

The product of its digits is 19595520, while the sum is 62.

The square root of 399879458 is about 19996.9862229287. The cubic root of 399879458 is about 736.7322788712.

The spelling of 399879458 in words is "three hundred ninety-nine million, eight hundred seventy-nine thousand, four hundred fifty-eight".