139990344 has 32 divisors (see below), whose sum is σ = 376897920. Its totient is φ = 43073856.

The previous prime is 139990339. The next prime is 139990363. The reversal of 139990344 is 443099931.

It is a junction number, because it is equal to n+sod(n) for n = 139990296 and 139990305.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224032 + ... + 224655.

It is an arithmetic number, because the mean of its divisors is an integer number (11778060).

Almost surely, 2^139990344 is an apocalyptic number.

It is an amenable number.

139990344 is an abundant number, since it is smaller than the sum of its proper divisors (236907576).

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

139990344 is a wasteful number, since it uses less digits than its factorization.

139990344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448709 (or 448705 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 42.

The square root of 139990344 is about 11831.7515186890. The cubic root of 139990344 is about 519.2374721194.

The spelling of 139990344 in words is "one hundred thirty-nine million, nine hundred ninety thousand, three hundred forty-four".