11879881 has 8 divisors (see below), whose sum is σ = 12926984. Its totient is φ = 10851840.

The previous prime is 11879869. The next prime is 11879887. The reversal of 11879881 is 18897811.

11879881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 80656 + 11799225 = 284^2 + 3435^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11879881 - 2⁹ = 11879369 is a prime.

It is a super-2 number, since 2×11879881² = 282263145148322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11879887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3450 + ... + 5971.

It is an arithmetic number, because the mean of its divisors is an integer number (1615873).

Almost surely, 2^11879881 is an apocalyptic number.

It is an amenable number.

11879881 is a deficient number, since it is larger than the sum of its proper divisors (1047103).

11879881 is an equidigital number, since it uses as much as digits as its factorization.

11879881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9531.

The product of its digits is 32256, while the sum is 43.

The square root of 11879881 is about 3446.7203251787. The cubic root of 11879881 is about 228.1763857722.

The spelling of 11879881 in words is "eleven million, eight hundred seventy-nine thousand, eight hundred eighty-one".