139630635 has 40 divisors (see below), whose sum is σ = 252677040. Its totient is φ = 73763136.

The previous prime is 139630633. The next prime is 139630649. The reversal of 139630635 is 536036931.

139630635 is a `hidden beast` number, since 13 + 9 + 6 + 3 + 0 + 635 = 666.

It is not a de Polignac number, because 139630635 - 2¹ = 139630633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139630635.

It is not an unprimeable number, because it can be changed into a prime (139630633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 42564 + ... + 45726.

It is an arithmetic number, because the mean of its divisors is an integer number (6316926).

Almost surely, 2^139630635 is an apocalyptic number.

139630635 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

139630635 is a deficient number, since it is larger than the sum of its proper divisors (113046405).

139630635 is a wasteful number, since it uses less digits than its factorization.

139630635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3289 (or 3280 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 36.

The square root of 139630635 is about 11816.5407374578. The cubic root of 139630635 is about 518.7923590513.

The spelling of 139630635 in words is "one hundred thirty-nine million, six hundred thirty thousand, six hundred thirty-five".