399822953 has 2 divisors, whose sum is σ = 399822954. Its totient is φ = 399822952.

The previous prime is 399822923. The next prime is 399822989. The reversal of 399822953 is 359228993.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 345476569 + 54346384 = 18587^2 + 7372^2 .

It is a cyclic number.

It is not a de Polignac number, because 399822953 - 2⁸ = 399822697 is a prime.

It is not a weakly prime, because it can be changed into another prime (399822923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199911476 + 199911477.

It is an arithmetic number, because the mean of its divisors is an integer number (199911477).

Almost surely, 2^399822953 is an apocalyptic number.

It is an amenable number.

399822953 is a deficient number, since it is larger than the sum of its proper divisors (1).

399822953 is an equidigital number, since it uses as much as digits as its factorization.

399822953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1049760, while the sum is 50.

The square root of 399822953 is about 19995.5733351160. The cubic root of 399822953 is about 736.6975758980.

The spelling of 399822953 in words is "three hundred ninety-nine million, eight hundred twenty-two thousand, nine hundred fifty-three".