139039500 has 48 divisors (see below), whose sum is σ = 404887392. Its totient is φ = 37076800.

The previous prime is 139039471. The next prime is 139039507. The reversal of 139039500 is 5930931.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (139039507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44847 + ... + 47846.

It is an arithmetic number, because the mean of its divisors is an integer number (8435154).

Almost surely, 2^139039500 is an apocalyptic number.

139039500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139039500 is an abundant number, since it is smaller than the sum of its proper divisors (265847892).

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

139039500 is a wasteful number, since it uses less digits than its factorization.

139039500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92715 (or 92703 counting only the distinct ones).

The product of its (nonzero) digits is 3645, while the sum is 30.

The square root of 139039500 is about 11791.5011766950. The cubic root of 139039500 is about 518.0592101982.

The spelling of 139039500 in words is "one hundred thirty-nine million, thirty-nine thousand, five hundred".