139099500 has 72 divisors (see below), whose sum is σ = 438826752. Its totient is φ = 37092000.

The previous prime is 139099483. The next prime is 139099517. The reversal of 139099500 is 5990931.

139099500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (139099483) and next prime (139099517).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10956 + ... + 19955.

It is an arithmetic number, because the mean of its divisors is an integer number (6094816).

Almost surely, 2^139099500 is an apocalyptic number.

139099500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139099500 is an abundant number, since it is smaller than the sum of its proper divisors (299727252).

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

139099500 is a wasteful number, since it uses less digits than its factorization.

139099500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30936 (or 30921 counting only the distinct ones).

The product of its (nonzero) digits is 10935, while the sum is 36.

The square root of 139099500 is about 11794.0451075956. The cubic root of 139099500 is about 518.1337191987.

It can be divided in two parts, 13909 and 9500, that added together give a square (23409 = 153²).

The spelling of 139099500 in words is "one hundred thirty-nine million, ninety-nine thousand, five hundred".