399141218 has 16 divisors (see below), whose sum is σ = 713992320. Its totient is φ = 163622976.

The previous prime is 399141217. The next prime is 399141221. The reversal of 399141218 is 812141993.

It is not an unprimeable number, because it can be changed into a prime (399141217) 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, 619463 + ... + 620106.

It is an arithmetic number, because the mean of its divisors is an integer number (44624520).

Almost surely, 2^399141218 is an apocalyptic number.

399141218 is a deficient number, since it is larger than the sum of its proper divisors (314851102).

399141218 is a wasteful number, since it uses less digits than its factorization.

399141218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239601.

The product of its digits is 15552, while the sum is 38.

The square root of 399141218 is about 19978.5189140737. The cubic root of 399141218 is about 736.2786252602.

The spelling of 399141218 in words is "three hundred ninety-nine million, one hundred forty-one thousand, two hundred eighteen".