139102836 has 24 divisors (see below), whose sum is σ = 325625664. Its totient is φ = 46217280.

The previous prime is 139102811. The next prime is 139102837. The reversal of 139102836 is 638201931.

It is a junction number, because it is equal to n+sod(n) for n = 139102797 and 139102806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139102837) 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 7 ways as a sum of consecutive naturals, for example, 14905 + ... + 22368.

It is an arithmetic number, because the mean of its divisors is an integer number (13567736).

Almost surely, 2^139102836 is an apocalyptic number.

It is an amenable number.

139102836 is an abundant number, since it is smaller than the sum of its proper divisors (186522828).

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

139102836 is a wasteful number, since it uses less digits than its factorization.

139102836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37591 (or 37589 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 139102836 is about 11794.1865340514. The cubic root of 139102836 is about 518.1378612703.

The spelling of 139102836 in words is "one hundred thirty-nine million, one hundred two thousand, eight hundred thirty-six".