139878753 has 16 divisors (see below), whose sum is σ = 215349120. Its totient is φ = 79105536.

The previous prime is 139878751. The next prime is 139878769. The reversal of 139878753 is 357878931.

It is not a de Polignac number, because 139878753 - 2¹ = 139878751 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 139878696 and 139878705.

It is not an unprimeable number, because it can be changed into a prime (139878751) by changing a digit.

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, 32298 + ... + 36371.

It is an arithmetic number, because the mean of its divisors is an integer number (13459320).

Almost surely, 2^139878753 is an apocalyptic number.

It is an amenable number.

139878753 is a deficient number, since it is larger than the sum of its proper divisors (75470367).

139878753 is an equidigital number, since it uses as much as digits as its factorization.

139878753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68776.

The product of its digits is 1270080, while the sum is 51.

The square root of 139878753 is about 11827.0348354945. The cubic root of 139878753 is about 519.0994682405.

The spelling of 139878753 in words is "one hundred thirty-nine million, eight hundred seventy-eight thousand, seven hundred fifty-three".