11916791 has 8 divisors (see below), whose sum is σ = 12140544. Its totient is φ = 11695320.

The previous prime is 11916787. The next prime is 11916799. The reversal of 11916791 is 19761911.

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 11916791 - 2² = 11916787 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 (11916799) 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 7 ways as a sum of consecutive naturals, for example, 12626 + ... + 13536.

It is an arithmetic number, because the mean of its divisors is an integer number (1517568).

Almost surely, 2^11916791 is an apocalyptic number.

11916791 is a deficient number, since it is larger than the sum of its proper divisors (223753).

11916791 is a wasteful number, since it uses less digits than its factorization.

11916791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141.

The product of its digits is 3402, while the sum is 35.

The square root of 11916791 is about 3452.0705380974. The cubic root of 11916791 is about 228.4124510783.

The spelling of 11916791 in words is "eleven million, nine hundred sixteen thousand, seven hundred ninety-one".