13636949 has 2 divisors, whose sum is σ = 13636950. Its totient is φ = 13636948.

The previous prime is 13636943. The next prime is 13636951. The reversal of 13636949 is 94963631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12180100 + 1456849 = 3490^2 + 1207^2 .

It is a cyclic number.

It is not a de Polignac number, because 13636949 - 2⁴ = 13636933 is a prime.

Together with 13636951, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p₈₈₇₉₈₁ and since 13636949 and 887981 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13636943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6818474 + 6818475.

It is an arithmetic number, because the mean of its divisors is an integer number (6818475).

Almost surely, 2^13636949 is an apocalyptic number.

It is an amenable number.

13636949 is a deficient number, since it is larger than the sum of its proper divisors (1).

13636949 is an equidigital number, since it uses as much as digits as its factorization.

13636949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 104976, while the sum is 41.

The square root of 13636949 is about 3692.8239871405. The cubic root of 13636949 is about 238.9126096350.

The spelling of 13636949 in words is "thirteen million, six hundred thirty-six thousand, nine hundred forty-nine".