11724791 has 4 divisors (see below), whose sum is σ = 12626712. Its totient is φ = 10822872.

The previous prime is 11724773. The next prime is 11724809. The reversal of 11724791 is 19742711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19742711 = 61 ⋅323651.

It is an interprime number because it is at equal distance from previous prime (11724773) and next prime (11724809).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11724791 is a prime.

It is a super-3 number, since 3×11724791³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11724721) 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 3 ways as a sum of consecutive naturals, for example, 450941 + ... + 450966.

It is an arithmetic number, because the mean of its divisors is an integer number (3156678).

Almost surely, 2^11724791 is an apocalyptic number.

11724791 is a deficient number, since it is larger than the sum of its proper divisors (901921).

11724791 is an equidigital number, since it uses as much as digits as its factorization.

11724791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901920.

The product of its digits is 3528, while the sum is 32.

The square root of 11724791 is about 3424.1482152500. The cubic root of 11724791 is about 227.1790975344.

The spelling of 11724791 in words is "eleven million, seven hundred twenty-four thousand, seven hundred ninety-one".