629885139 has 48 divisors (see below), whose sum is σ = 973337472. Its totient is φ = 360881664.

The previous prime is 629885083. The next prime is 629885141. The reversal of 629885139 is 931588926.

It is a happy number.

It is not a de Polignac number, because 629885139 - 2⁸ = 629884883 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 629885091 and 629885100.

It is not an unprimeable number, because it can be changed into a prime (629885149) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 921892 + ... + 922574.

It is an arithmetic number, because the mean of its divisors is an integer number (20277864).

Almost surely, 2^629885139 is an apocalyptic number.

629885139 is a deficient number, since it is larger than the sum of its proper divisors (343452333).

629885139 is a wasteful number, since it uses less digits than its factorization.

629885139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836 (or 823 counting only the distinct ones).

The product of its digits is 933120, while the sum is 51.

The square root of 629885139 is about 25097.5126058341. The cubic root of 629885139 is about 857.2097866745.

The spelling of 629885139 in words is "six hundred twenty-nine million, eight hundred eighty-five thousand, one hundred thirty-nine".