11965579 has 2 divisors, whose sum is σ = 11965580. Its totient is φ = 11965578.

The previous prime is 11965561. The next prime is 11965607. The reversal of 11965579 is 97556911.

11965579 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11965579 - 2⁹ = 11965067 is a prime.

It is equal to p₇₈₅₉₆₈ and since 11965579 and 785968 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (11965519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5982789 + 5982790.

It is an arithmetic number, because the mean of its divisors is an integer number (5982790).

Almost surely, 2^11965579 is an apocalyptic number.

11965579 is a deficient number, since it is larger than the sum of its proper divisors (1).

11965579 is an equidigital number, since it uses as much as digits as its factorization.

11965579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 85050, while the sum is 43.

The square root of 11965579 is about 3459.1298038669. The cubic root of 11965579 is about 228.7237377158.

It can be divided in two parts, 11965 and 579, that added together give a square (12544 = 112²).

The spelling of 11965579 in words is "eleven million, nine hundred sixty-five thousand, five hundred seventy-nine".