629618139 has 12 divisors (see below), whose sum is σ = 909909000. Its totient is φ = 419532864.

The previous prime is 629618113. The next prime is 629618147. The reversal of 629618139 is 931816926.

It is a happy number.

629618139 is a `hidden beast` number, since 6 + 29 + 618 + 1 + 3 + 9 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-629618139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 629618094 and 629618103.

It is not an unprimeable number, because it can be changed into a prime (629618179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2227 + ... + 35555.

It is an arithmetic number, because the mean of its divisors is an integer number (75825750).

Almost surely, 2^629618139 is an apocalyptic number.

629618139 is a deficient number, since it is larger than the sum of its proper divisors (280290861).

629618139 is a wasteful number, since it uses less digits than its factorization.

629618139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35434 (or 35431 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 629618139 is about 25092.1927897902. The cubic root of 629618139 is about 857.0886495838.

The spelling of 629618139 in words is "six hundred twenty-nine million, six hundred eighteen thousand, one hundred thirty-nine".