11615969 has 2 divisors, whose sum is σ = 11615970. Its totient is φ = 11615968.

The previous prime is 11615963. The next prime is 11615983. The reversal of 11615969 is 96951611.

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., 10975969 + 640000 = 3313^2 + 800^2 .

It is a cyclic number.

It is not a de Polignac number, because 11615969 - 2¹⁶ = 11550433 is a prime.

It is a super-2 number, since 2×11615969² = 269861471617922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11615963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5807984 + 5807985.

It is an arithmetic number, because the mean of its divisors is an integer number (5807985).

Almost surely, 2^11615969 is an apocalyptic number.

It is an amenable number.

11615969 is a deficient number, since it is larger than the sum of its proper divisors (1).

11615969 is an equidigital number, since it uses as much as digits as its factorization.

11615969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14580, while the sum is 38.

The square root of 11615969 is about 3408.2207968381. The cubic root of 11615969 is about 226.4740681814.

The spelling of 11615969 in words is "eleven million, six hundred fifteen thousand, nine hundred sixty-nine".