139859744 has 24 divisors (see below), whose sum is σ = 277206300. Its totient is φ = 69458176.

The previous prime is 139859743. The next prime is 139859767. The reversal of 139859744 is 447958931.

It can be written as a sum of positive squares in 2 ways, for example, as 139523344 + 336400 = 11812^2 + 580^2 .

It is a junction number, because it is equal to n+sod(n) for n = 139859692 and 139859701.

It is not an unprimeable number, because it can be changed into a prime (139859743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9899 + ... + 19434.

Almost surely, 2^139859744 is an apocalyptic number.

It is an amenable number.

139859744 is a deficient number, since it is larger than the sum of its proper divisors (137346556).

139859744 is a wasteful number, since it uses less digits than its factorization.

139859744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29492 (or 29484 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 50.

The square root of 139859744 is about 11826.2311832638. The cubic root of 139859744 is about 519.0759526157.

The spelling of 139859744 in words is "one hundred thirty-nine million, eight hundred fifty-nine thousand, seven hundred forty-four".