11986669 has 2 divisors, whose sum is σ = 11986670. Its totient is φ = 11986668.

The previous prime is 11986661. The next prime is 11986691. The reversal of 11986669 is 96668911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11985444 + 1225 = 3462^2 + 35^2 .

It is a cyclic number.

It is not a de Polignac number, because 11986669 - 2³ = 11986661 is a prime.

It is a super-2 number, since 2×11986669² = 287360467431122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11986661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5993334 + 5993335.

It is an arithmetic number, because the mean of its divisors is an integer number (5993335).

Almost surely, 2^11986669 is an apocalyptic number.

It is an amenable number.

11986669 is a deficient number, since it is larger than the sum of its proper divisors (1).

11986669 is an equidigital number, since it uses as much as digits as its factorization.

11986669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 46.

The square root of 11986669 is about 3462.1769163346. The cubic root of 11986669 is about 228.8580382885.

The spelling of 11986669 in words is "eleven million, nine hundred eighty-six thousand, six hundred sixty-nine".