629422885 has 24 divisors (see below), whose sum is σ = 946214136. Its totient is φ = 398401920.

The previous prime is 629422879. The next prime is 629422889. The reversal of 629422885 is 588224926.

It can be written as a sum of positive squares in 4 ways, for example, as 78535044 + 550887841 = 8862^2 + 23471^2 .

It is not a de Polignac number, because 629422885 - 2⁹ = 629422373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (629422889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 95626 + ... + 101995.

It is an arithmetic number, because the mean of its divisors is an integer number (39425589).

Almost surely, 2^629422885 is an apocalyptic number.

629422885 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

629422885 is a deficient number, since it is larger than the sum of its proper divisors (316791251).

629422885 is a wasteful number, since it uses less digits than its factorization.

629422885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197653 (or 197646 counting only the distinct ones).

The product of its digits is 552960, while the sum is 46.

The square root of 629422885 is about 25088.3017559978. The cubic root of 629422885 is about 857.0000417547. Note that the first 4 decimals are identical.

The spelling of 629422885 in words is "six hundred twenty-nine million, four hundred twenty-two thousand, eight hundred eighty-five".