139396608 has 180 divisors, whose sum is σ = 438069060. Its totient is φ = 42651648.

The previous prime is 139396603. The next prime is 139396619. The reversal of 139396608 is 806693931.

139396608 is a `hidden beast` number, since 1 + 3 + 9 + 39 + 6 + 608 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139396601) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 778663 + ... + 778841.

It is an arithmetic number, because the mean of its divisors is an integer number (2433717).

Almost surely, 2^139396608 is an apocalyptic number.

139396608 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 139396608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219034530).

139396608 is an abundant number, since it is smaller than the sum of its proper divisors (298672452).

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

139396608 is a wasteful number, since it uses less digits than its factorization.

139396608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 139396608 is about 11806.6340673369. The cubic root of 139396608 is about 518.5023574746.

The spelling of 139396608 in words is "one hundred thirty-nine million, three hundred ninety-six thousand, six hundred eight".