139709136 has 40 divisors (see below), whose sum is σ = 412475584. Its totient is φ = 39916800.

The previous prime is 139709131. The next prime is 139709177. The reversal of 139709136 is 631907931.

It is a junction number, because it is equal to n+sod(n) for n = 139709094 and 139709103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139709131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207565 + ... + 208236.

Almost surely, 2^139709136 is an apocalyptic number.

139709136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

139709136 is an abundant number, since it is smaller than the sum of its proper divisors (272766448).

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

139709136 is a wasteful number, since it uses less digits than its factorization.

139709136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415819 (or 415813 counting only the distinct ones).

The product of its (nonzero) digits is 30618, while the sum is 39.

The square root of 139709136 is about 11819.8619281276. The cubic root of 139709136 is about 518.8895633391.

The spelling of 139709136 in words is "one hundred thirty-nine million, seven hundred nine thousand, one hundred thirty-six".