11686949 has 2 divisors, whose sum is σ = 11686950. Its totient is φ = 11686948.

The previous prime is 11686943. The next prime is 11686951. The reversal of 11686949 is 94968611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11682724 + 4225 = 3418^2 + 65^2 .

It is a cyclic number.

It is not a de Polignac number, because 11686949 - 2⁴ = 11686933 is a prime.

Together with 11686951, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11686943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5843474 + 5843475.

It is an arithmetic number, because the mean of its divisors is an integer number (5843475).

Almost surely, 2^11686949 is an apocalyptic number.

It is an amenable number.

11686949 is a deficient number, since it is larger than the sum of its proper divisors (1).

11686949 is an equidigital number, since it uses as much as digits as its factorization.

11686949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 44.

The square root of 11686949 is about 3418.6179956234. The cubic root of 11686949 is about 226.9344257408.

The spelling of 11686949 in words is "eleven million, six hundred eighty-six thousand, nine hundred forty-nine".