399622822 has 8 divisors (see below), whose sum is σ = 613374696. Its totient is φ = 195164592.

The previous prime is 399622819. The next prime is 399622849. The reversal of 399622822 is 228226993.

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

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2323303 + ... + 2323474.

It is an arithmetic number, because the mean of its divisors is an integer number (76671837).

Almost surely, 2^399622822 is an apocalyptic number.

399622822 is a deficient number, since it is larger than the sum of its proper divisors (213751874).

399622822 is a wasteful number, since it uses less digits than its factorization.

399622822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4646822.

The product of its digits is 186624, while the sum is 43.

The square root of 399622822 is about 19990.5683260882. The cubic root of 399622822 is about 736.5746376258.

The spelling of 399622822 in words is "three hundred ninety-nine million, six hundred twenty-two thousand, eight hundred twenty-two".