399522299 has 8 divisors (see below), whose sum is σ = 450871920. Its totient is φ = 350677600.

The previous prime is 399522269. The next prime is 399522307. The reversal of 399522299 is 992225993.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-399522299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (399522229) 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, 625892 + ... + 626529.

It is an arithmetic number, because the mean of its divisors is an integer number (56358990).

Almost surely, 2^399522299 is an apocalyptic number.

399522299 is a deficient number, since it is larger than the sum of its proper divisors (51349621).

399522299 is a wasteful number, since it uses less digits than its factorization.

399522299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252461.

The product of its digits is 787320, while the sum is 50.

The square root of 399522299 is about 19988.0539072717. The cubic root of 399522299 is about 736.5128719663.

The spelling of 399522299 in words is "three hundred ninety-nine million, five hundred twenty-two thousand, two hundred ninety-nine".