11719969 has 2 divisors, whose sum is σ = 11719970. Its totient is φ = 11719968.

The previous prime is 11719963. The next prime is 11719997. The reversal of 11719969 is 96991711.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9529569 + 2190400 = 3087^2 + 1480^2 .

It is a cyclic number.

It is not a de Polignac number, because 11719969 - 2¹¹ = 11717921 is a prime.

It is a super-2 number, since 2×11719969² = 274715346721922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11719963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5859984 + 5859985.

It is an arithmetic number, because the mean of its divisors is an integer number (5859985).

Almost surely, 2^11719969 is an apocalyptic number.

It is an amenable number.

11719969 is a deficient number, since it is larger than the sum of its proper divisors (1).

11719969 is an equidigital number, since it uses as much as digits as its factorization.

11719969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30618, while the sum is 43.

The square root of 11719969 is about 3423.4440261234. Note that the first 3 decimals coincide. The cubic root of 11719969 is about 227.1479496354.

The spelling of 11719969 in words is "eleven million, seven hundred nineteen thousand, nine hundred sixty-nine".