139192900 has 72 divisors (see below), whose sum is σ = 376600896. Its totient is φ = 43382400.

The previous prime is 139192843. The next prime is 139192913. The reversal of 139192900 is 9291931.

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, 1339 + ... + 16738.

It is an arithmetic number, because the mean of its divisors is an integer number (5230568).

Almost surely, 2^139192900 is an apocalyptic number.

139192900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139192900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188300448).

139192900 is an abundant number, since it is smaller than the sum of its proper divisors (237407996).

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

139192900 is a wasteful number, since it uses less digits than its factorization.

139192900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18109 (or 18102 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 139192900 is about 11798.0040684855. The cubic root of 139192900 is about 518.2496622512.

The spelling of 139192900 in words is "one hundred thirty-nine million, one hundred ninety-two thousand, nine hundred".