139991180 has 48 divisors (see below), whose sum is σ = 338990400. Its totient is φ = 47566848.

The previous prime is 139991177. The next prime is 139991191. The reversal of 139991180 is 81199931.

It is a happy number.

139991180 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11396 + ... + 20244.

It is an arithmetic number, because the mean of its divisors is an integer number (7062300).

Almost surely, 2^139991180 is an apocalyptic number.

139991180 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 139991180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169495200).

139991180 is an abundant number, since it is smaller than the sum of its proper divisors (198999220).

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

139991180 is a wasteful number, since it uses less digits than its factorization.

139991180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8978 (or 8976 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 41.

The square root of 139991180 is about 11831.7868473025. The cubic root of 139991180 is about 519.2385057185.

The spelling of 139991180 in words is "one hundred thirty-nine million, nine hundred ninety-one thousand, one hundred eighty".