13449949 has 2 divisors, whose sum is σ = 13449950. Its totient is φ = 13449948.

The previous prime is 13449937. The next prime is 13449971. The reversal of 13449949 is 94994431.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13322500 + 127449 = 3650^2 + 357^2 .

It is a cyclic number.

It is not a de Polignac number, because 13449949 - 2²¹ = 11352797 is a prime.

It is a super-2 number, since 2×13449949² = 361802256205202, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13449979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6724974 + 6724975.

It is an arithmetic number, because the mean of its divisors is an integer number (6724975).

Almost surely, 2^13449949 is an apocalyptic number.

It is an amenable number.

13449949 is a deficient number, since it is larger than the sum of its proper divisors (1).

13449949 is an equidigital number, since it uses as much as digits as its factorization.

13449949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 43.

The square root of 13449949 is about 3667.4172110628. The cubic root of 13449949 is about 237.8155303859.

The spelling of 13449949 in words is "thirteen million, four hundred forty-nine thousand, nine hundred forty-nine".