399919322 has 16 divisors (see below), whose sum is σ = 692908992. Its totient is φ = 171088320.

The previous prime is 399919321. The next prime is 399919327. The reversal of 399919322 is 223919993.

It is not an unprimeable number, because it can be changed into a prime (399919321) 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, 534278 + ... + 535025.

It is an arithmetic number, because the mean of its divisors is an integer number (43306812).

Almost surely, 2^399919322 is an apocalyptic number.

399919322 is a deficient number, since it is larger than the sum of its proper divisors (292989670).

399919322 is a wasteful number, since it uses less digits than its factorization.

399919322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069333.

The product of its digits is 236196, while the sum is 47.

The square root of 399919322 is about 19997.9829482876. The cubic root of 399919322 is about 736.7567596817.

The spelling of 399919322 in words is "three hundred ninety-nine million, nine hundred nineteen thousand, three hundred twenty-two".