139708830 has 64 divisors (see below), whose sum is σ = 343761408. Its totient is φ = 36328320.

The previous prime is 139708819. The next prime is 139708867. The reversal of 139708830 is 38807931.

139708830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 227604 + ... + 228216.

It is an arithmetic number, because the mean of its divisors is an integer number (5371272).

Almost surely, 2^139708830 is an apocalyptic number.

139708830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 139708830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171880704).

139708830 is an abundant number, since it is smaller than the sum of its proper divisors (204052578).

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

139708830 is a wasteful number, since it uses less digits than its factorization.

139708830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 139708830 is about 11819.8489838069. The cubic root of 139708830 is about 518.8891845037.

The spelling of 139708830 in words is "one hundred thirty-nine million, seven hundred eight thousand, eight hundred thirty".