139723914 has 64 divisors (see below), whose sum is σ = 324051840. Its totient is φ = 39755520.

The previous prime is 139723897. The next prime is 139723921. The reversal of 139723914 is 419327931.

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, 69832 + ... + 71804.

It is an arithmetic number, because the mean of its divisors is an integer number (5063310).

Almost surely, 2^139723914 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139723914, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162025920).

139723914 is an abundant number, since it is smaller than the sum of its proper divisors (184327926).

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

139723914 is a wasteful number, since it uses less digits than its factorization.

139723914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055.

The product of its digits is 40824, while the sum is 39.

The square root of 139723914 is about 11820.4870458031. The cubic root of 139723914 is about 518.9078582048.

The spelling of 139723914 in words is "one hundred thirty-nine million, seven hundred twenty-three thousand, nine hundred fourteen".