11793721 has 4 divisors (see below), whose sum is σ = 11807632. Its totient is φ = 11779812.

The previous prime is 11793703. The next prime is 11793731. The reversal of 11793721 is 12739711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11793721 - 2¹¹ = 11791673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11793731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5595 + ... + 7408.

It is an arithmetic number, because the mean of its divisors is an integer number (2951908).

Almost surely, 2^11793721 is an apocalyptic number.

It is an amenable number.

11793721 is a deficient number, since it is larger than the sum of its proper divisors (13911).

11793721 is an equidigital number, since it uses as much as digits as its factorization.

11793721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13910.

The product of its digits is 2646, while the sum is 31.

The square root of 11793721 is about 3434.1987420649. The cubic root of 11793721 is about 227.6234229453.

It can be divided in two parts, 1179 and 3721, that added together give a square (4900 = 70²).

The spelling of 11793721 in words is "eleven million, seven hundred ninety-three thousand, seven hundred twenty-one".