139589720 has 64 divisors (see below), whose sum is σ = 335949120. Its totient is φ = 52015104.

The previous prime is 139589719. The next prime is 139589741. The reversal of 139589720 is 27985931.

It is a congruent number.

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, 69044 + ... + 71036.

It is an arithmetic number, because the mean of its divisors is an integer number (5249205).

Almost surely, 2^139589720 is an apocalyptic number.

139589720 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 139589720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167974560).

139589720 is an abundant number, since it is smaller than the sum of its proper divisors (196359400).

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

139589720 is a wasteful number, since it uses less digits than its factorization.

139589720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2124 (or 2120 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 139589720 is about 11814.8093509798. The cubic root of 139589720 is about 518.7416813879.

The spelling of 139589720 in words is "one hundred thirty-nine million, five hundred eighty-nine thousand, seven hundred twenty".