139395168 has 120 divisors (see below), whose sum is σ = 447317640. Its totient is φ = 42232320.

The previous prime is 139395167. The next prime is 139395173. The reversal of 139395168 is 861593931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139395163) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 26068 + ... + 30956.

It is an arithmetic number, because the mean of its divisors is an integer number (3727647).

Almost surely, 2^139395168 is an apocalyptic number.

139395168 is a gapful number since it is divisible by the number (18) 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 139395168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223658820).

139395168 is an abundant number, since it is smaller than the sum of its proper divisors (307922472).

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

139395168 is a wasteful number, since it uses less digits than its factorization.

139395168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4922 (or 4905 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 139395168 is about 11806.5730845153. The cubic root of 139395168 is about 518.5005720511.

The spelling of 139395168 in words is "one hundred thirty-nine million, three hundred ninety-five thousand, one hundred sixty-eight".