139397112 has 160 divisors (see below), whose sum is σ = 418176000. Its totient is φ = 43281216.

The previous prime is 139397107. The next prime is 139397119. The reversal of 139397112 is 211793931.

It is a happy number.

139397112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139397119) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 700389 + ... + 700587.

It is an arithmetic number, because the mean of its divisors is an integer number (2613600).

Almost surely, 2^139397112 is an apocalyptic number.

139397112 is a gapful number since it is divisible by the number (12) 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 139397112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209088000).

139397112 is an abundant number, since it is smaller than the sum of its proper divisors (278778888).

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

139397112 is a wasteful number, since it uses less digits than its factorization.

139397112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287 (or 274 counting only the distinct ones).

The product of its digits is 10206, while the sum is 36.

The square root of 139397112 is about 11806.6554112500. The cubic root of 139397112 is about 518.5029823700.

The spelling of 139397112 in words is "one hundred thirty-nine million, three hundred ninety-seven thousand, one hundred twelve".