11722379 has 2 divisors, whose sum is σ = 11722380. Its totient is φ = 11722378.

The previous prime is 11722369. The next prime is 11722391. The reversal of 11722379 is 97322711.

It is a weak prime.

It is an emirp because it is prime and its reverse (97322711) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11722379 is a prime.

It is not a weakly prime, because it can be changed into another prime (11722369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5861189 + 5861190.

It is an arithmetic number, because the mean of its divisors is an integer number (5861190).

Almost surely, 2^11722379 is an apocalyptic number.

11722379 is a deficient number, since it is larger than the sum of its proper divisors (1).

11722379 is an equidigital number, since it uses as much as digits as its factorization.

11722379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5292, while the sum is 32.

The square root of 11722379 is about 3423.7959927542. The cubic root of 11722379 is about 227.1635181931.

The spelling of 11722379 in words is "eleven million, seven hundred twenty-two thousand, three hundred seventy-nine".