139835608 has 64 divisors (see below), whose sum is σ = 304974720. Its totient is φ = 59404800.

The previous prime is 139835603. The next prime is 139835621. The reversal of 139835608 is 806538931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139835603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 315435 + ... + 315877.

It is an arithmetic number, because the mean of its divisors is an integer number (4765230).

Almost surely, 2^139835608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139835608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152487360).

139835608 is an abundant number, since it is smaller than the sum of its proper divisors (165139112).

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

139835608 is a wasteful number, since it uses less digits than its factorization.

139835608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688 (or 684 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 139835608 is about 11825.2106957973. The cubic root of 139835608 is about 519.0460914191.

It can be divided in two parts, 13983 and 5608, that added together give a palindrome (19591).

The spelling of 139835608 in words is "one hundred thirty-nine million, eight hundred thirty-five thousand, six hundred eight".