139961768 has 16 divisors (see below), whose sum is σ = 262997280. Its totient is φ = 69829168.

The previous prime is 139961761. The next prime is 139961779. The reversal of 139961768 is 867169931.

It is not an unprimeable number, because it can be changed into a prime (139961761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14996 + ... + 22467.

It is an arithmetic number, because the mean of its divisors is an integer number (16437330).

Almost surely, 2^139961768 is an apocalyptic number.

It is an amenable number.

139961768 is a deficient number, since it is larger than the sum of its proper divisors (123035512).

139961768 is a wasteful number, since it uses less digits than its factorization.

139961768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37936 (or 37932 counting only the distinct ones).

The product of its digits is 489888, while the sum is 50.

The square root of 139961768 is about 11830.5438590117. The cubic root of 139961768 is about 519.2021393498.

The spelling of 139961768 in words is "one hundred thirty-nine million, nine hundred sixty-one thousand, seven hundred sixty-eight".