11516991 has 16 divisors (see below), whose sum is σ = 15941376. Its totient is φ = 7390656.

The previous prime is 11516933. The next prime is 11517017. The reversal of 11516991 is 19961511.

It is not a de Polignac number, because 11516991 - 2⁷ = 11516863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11516291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8806 + ... + 10028.

It is an arithmetic number, because the mean of its divisors is an integer number (996336).

Almost surely, 2^11516991 is an apocalyptic number.

11516991 is a deficient number, since it is larger than the sum of its proper divisors (4424385).

11516991 is a wasteful number, since it uses less digits than its factorization.

11516991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1342.

The product of its digits is 2430, while the sum is 33.

The square root of 11516991 is about 3393.6692531830. The cubic root of 11516991 is about 225.8289814871.

The spelling of 11516991 in words is "eleven million, five hundred sixteen thousand, nine hundred ninety-one".