399343274 has 8 divisors (see below), whose sum is σ = 653470848. Its totient is φ = 181519660.

The previous prime is 399343201. The next prime is 399343291. The reversal of 399343274 is 472343993.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9075962 + ... + 9076005.

It is an arithmetic number, because the mean of its divisors is an integer number (81683856).

Almost surely, 2^399343274 is an apocalyptic number.

399343274 is a deficient number, since it is larger than the sum of its proper divisors (254127574).

399343274 is a wasteful number, since it uses less digits than its factorization.

399343274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18151980.

The product of its digits is 489888, while the sum is 44.

The square root of 399343274 is about 19983.5751055711. The cubic root of 399343274 is about 736.4028456368.

The spelling of 399343274 in words is "three hundred ninety-nine million, three hundred forty-three thousand, two hundred seventy-four".