139240244 has 48 divisors (see below), whose sum is σ = 287790720. Its totient is φ = 58112640.

The previous prime is 139240237. The next prime is 139240267. The reversal of 139240244 is 442042931.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 130457 + ... + 131519.

It is an arithmetic number, because the mean of its divisors is an integer number (5995640).

Almost surely, 2^139240244 is an apocalyptic number.

It is an amenable number.

139240244 is an abundant number, since it is smaller than the sum of its proper divisors (148550476).

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

139240244 is a wasteful number, since it uses less digits than its factorization.

139240244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320 (or 1318 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 139240244 is about 11800.0103389785. The cubic root of 139240244 is about 518.3084134057.

The spelling of 139240244 in words is "one hundred thirty-nine million, two hundred forty thousand, two hundred forty-four".