399410338 has 16 divisors (see below), whose sum is σ = 616212864. Its totient is φ = 194022000.

The previous prime is 399410329. The next prime is 399410339. The reversal of 399410338 is 833014993.

It is a self number, because there is not a number n which added to its sum of digits gives 399410338.

It is not an unprimeable number, because it can be changed into a prime (399410339) 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, 51981 + ... + 59167.

It is an arithmetic number, because the mean of its divisors is an integer number (38513304).

Almost surely, 2^399410338 is an apocalyptic number.

399410338 is a deficient number, since it is larger than the sum of its proper divisors (216802526).

399410338 is a wasteful number, since it uses less digits than its factorization.

399410338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7977.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 399410338 is about 19985.2530131595. The cubic root of 399410338 is about 736.4440661100. Note that the first 3 decimals are identical.

The spelling of 399410338 in words is "three hundred ninety-nine million, four hundred ten thousand, three hundred thirty-eight".