139130208 has 108 divisors (see below), whose sum is σ = 460294380. Its totient is φ = 39747456.

The previous prime is 139130191. The next prime is 139130219. The reversal of 139130208 is 802031931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 9183 + ... + 19041.

It is an arithmetic number, because the mean of its divisors is an integer number (4261985).

Almost surely, 2^139130208 is an apocalyptic number.

139130208 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 139130208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230147190).

139130208 is an abundant number, since it is smaller than the sum of its proper divisors (321164172).

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

139130208 is a wasteful number, since it uses less digits than its factorization.

139130208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9889 (or 9871 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 139130208 is about 11795.3468791723. The cubic root of 139130208 is about 518.1718446162.

The spelling of 139130208 in words is "one hundred thirty-nine million, one hundred thirty thousand, two hundred eight".