11939444879 has 16 divisors (see below), whose sum is σ = 12860633088. Its totient is φ = 11044236672.

The previous prime is 11939444861. The next prime is 11939444897. The reversal of 11939444879 is 97844493911.

It is an interprime number because it is at equal distance from previous prime (11939444861) and next prime (11939444897).

It is a cyclic number.

It is not a de Polignac number, because 11939444879 - 2²⁰ = 11938396303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11939444809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205172 + ... + 256854.

It is an arithmetic number, because the mean of its divisors is an integer number (803789568).

Almost surely, 2^11939444879 is an apocalyptic number.

11939444879 is a deficient number, since it is larger than the sum of its proper divisors (921188209).

11939444879 is a wasteful number, since it uses less digits than its factorization.

11939444879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51934.

The product of its digits is 7838208, while the sum is 59.

The spelling of 11939444879 in words is "eleven billion, nine hundred thirty-nine million, four hundred forty-four thousand, eight hundred seventy-nine".