139149636 has 24 divisors (see below), whose sum is σ = 324989280. Its totient is φ = 46339392.

The previous prime is 139149629. The next prime is 139149649. The reversal of 139149636 is 636941931.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9360 + ... + 19128.

It is an arithmetic number, because the mean of its divisors is an integer number (13541220).

Almost surely, 2^139149636 is an apocalyptic number.

It is an amenable number.

139149636 is an abundant number, since it is smaller than the sum of its proper divisors (185839644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139149636 is a wasteful number, since it uses less digits than its factorization.

139149636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10963 (or 10961 counting only the distinct ones).

The product of its digits is 104976, while the sum is 42.

The square root of 139149636 is about 11796.1703955140. The cubic root of 139149636 is about 518.1959624892.

The spelling of 139149636 in words is "one hundred thirty-nine million, one hundred forty-nine thousand, six hundred thirty-six".