139105208 has 48 divisors (see below), whose sum is σ = 289251000. Its totient is φ = 62195520.

The previous prime is 139105201. The next prime is 139105229. The reversal of 139105208 is 802501931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139105201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 933518 + ... + 933666.

Almost surely, 2^139105208 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 139105208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144625500).

139105208 is an abundant number, since it is smaller than the sum of its proper divisors (150145792).

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

139105208 is a wasteful number, since it uses less digits than its factorization.

139105208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372 (or 265 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 139105208 is about 11794.2870916389. The cubic root of 139105208 is about 518.1408063721.

The spelling of 139105208 in words is "one hundred thirty-nine million, one hundred five thousand, two hundred eight".