11959669 has 2 divisors, whose sum is σ = 11959670. Its totient is φ = 11959668.

The previous prime is 11959627. The next prime is 11959679. The reversal of 11959669 is 96695911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8773444 + 3186225 = 2962^2 + 1785^2 .

It is a cyclic number.

It is not a de Polignac number, because 11959669 - 2¹³ = 11951477 is a prime.

It is a super-2 number, since 2×11959669² = 286067365179122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11959679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5979834 + 5979835.

It is an arithmetic number, because the mean of its divisors is an integer number (5979835).

Almost surely, 2^11959669 is an apocalyptic number.

It is an amenable number.

11959669 is a deficient number, since it is larger than the sum of its proper divisors (1).

11959669 is an equidigital number, since it uses as much as digits as its factorization.

11959669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 131220, while the sum is 46.

The square root of 11959669 is about 3458.2754372664. The cubic root of 11959669 is about 228.6860746852.

The spelling of 11959669 in words is "eleven million, nine hundred fifty-nine thousand, six hundred sixty-nine".