139055244 has 12 divisors (see below), whose sum is σ = 324462264. Its totient is φ = 46351744.

The previous prime is 139055239. The next prime is 139055297. The reversal of 139055244 is 442550931.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5793957 + ... + 5793980.

It is an arithmetic number, because the mean of its divisors is an integer number (27038522).

Almost surely, 2^139055244 is an apocalyptic number.

It is an amenable number.

139055244 is an abundant number, since it is smaller than the sum of its proper divisors (185407020).

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

139055244 is a wasteful number, since it uses less digits than its factorization.

139055244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11587944 (or 11587942 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 139055244 is about 11792.1687572728. The cubic root of 139055244 is about 518.0787634340.

The spelling of 139055244 in words is "one hundred thirty-nine million, fifty-five thousand, two hundred forty-four".