139989544 has 16 divisors (see below), whose sum is σ = 263340000. Its totient is φ = 69765552.

The previous prime is 139989503. The next prime is 139989559. The reversal of 139989544 is 445989931.

It is a junction number, because it is equal to n+sod(n) for n = 139989491 and 139989500.

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, 26044 + ... + 30955.

It is an arithmetic number, because the mean of its divisors is an integer number (16458750).

Almost surely, 2^139989544 is an apocalyptic number.

It is an amenable number.

139989544 is a deficient number, since it is larger than the sum of its proper divisors (123350456).

139989544 is a wasteful number, since it uses less digits than its factorization.

139989544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57312 (or 57308 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 52.

The square root of 139989544 is about 11831.7177113046. The cubic root of 139989544 is about 519.2364830256.

The spelling of 139989544 in words is "one hundred thirty-nine million, nine hundred eighty-nine thousand, five hundred forty-four".