11719291 has 4 divisors (see below), whose sum is σ = 11729232. Its totient is φ = 11709352.

The previous prime is 11719289. The next prime is 11719303. The reversal of 11719291 is 19291711.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 19291711 = 1867 ⋅10333.

It is a cyclic number.

It is not a de Polignac number, because 11719291 - 2¹ = 11719289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11719691) 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, 2920 + ... + 5653.

It is an arithmetic number, because the mean of its divisors is an integer number (2932308).

Almost surely, 2^11719291 is an apocalyptic number.

11719291 is a deficient number, since it is larger than the sum of its proper divisors (9941).

11719291 is an equidigital number, since it uses as much as digits as its factorization.

11719291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9940.

The product of its digits is 1134, while the sum is 31.

The square root of 11719291 is about 3423.3450016030. The cubic root of 11719291 is about 227.1435693826.

The spelling of 11719291 in words is "eleven million, seven hundred nineteen thousand, two hundred ninety-one".