399122229 has 8 divisors (see below), whose sum is σ = 580541472. Its totient is φ = 241892240.

The previous prime is 399122203. The next prime is 399122233. The reversal of 399122229 is 922221993.

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

It is a cyclic number.

It is not a de Polignac number, because 399122229 - 2⁹ = 399121717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399122239) 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, 6047274 + ... + 6047339.

It is an arithmetic number, because the mean of its divisors is an integer number (72567684).

Almost surely, 2^399122229 is an apocalyptic number.

It is an amenable number.

399122229 is a deficient number, since it is larger than the sum of its proper divisors (181419243).

399122229 is a wasteful number, since it uses less digits than its factorization.

399122229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12094627.

The product of its digits is 34992, while the sum is 39.

The square root of 399122229 is about 19978.0436729926. The cubic root of 399122229 is about 736.2669490114.

The spelling of 399122229 in words is "three hundred ninety-nine million, one hundred twenty-two thousand, two hundred twenty-nine".