11491779 has 16 divisors (see below), whose sum is σ = 17472672. Its totient is φ = 6655488.

The previous prime is 11491763. The next prime is 11491787. The reversal of 11491779 is 97719411.

It is not a de Polignac number, because 11491779 - 2⁴ = 11491763 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (11491709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8004 + ... + 9329.

It is an arithmetic number, because the mean of its divisors is an integer number (1092042).

Almost surely, 2^11491779 is an apocalyptic number.

11491779 is a deficient number, since it is larger than the sum of its proper divisors (5980893).

11491779 is a wasteful number, since it uses less digits than its factorization.

11491779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17366.

The product of its digits is 15876, while the sum is 39.

The square root of 11491779 is about 3389.9526545366. The cubic root of 11491779 is about 225.6640726729.

The spelling of 11491779 in words is "eleven million, four hundred ninety-one thousand, seven hundred seventy-nine".