139392008 has 16 divisors (see below), whose sum is σ = 298697280. Its totient is φ = 59739408.

The previous prime is 139391981. The next prime is 139392013. The reversal of 139392008 is 800293931.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1244516 + ... + 1244627.

It is an arithmetic number, because the mean of its divisors is an integer number (18668580).

Almost surely, 2^139392008 is an apocalyptic number.

It is an amenable number.

139392008 is an abundant number, since it is smaller than the sum of its proper divisors (159305272).

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

139392008 is a wasteful number, since it uses less digits than its factorization.

139392008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2489156 (or 2489152 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 139392008 is about 11806.4392599971. The cubic root of 139392008 is about 518.4966539952.

It can be divided in two parts, 13939200 and 8, that multiplied together give a square (111513600 = 10560²).

The spelling of 139392008 in words is "one hundred thirty-nine million, three hundred ninety-two thousand, eight".