13224949 has 2 divisors, whose sum is σ = 13224950. Its totient is φ = 13224948.

The previous prime is 13224917. The next prime is 13224961. The reversal of 13224949 is 94942231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8162449 + 5062500 = 2857^2 + 2250^2 .

It is an emirp because it is prime and its reverse (94942231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13224949 - 2⁵ = 13224917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13224989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6612474 + 6612475.

It is an arithmetic number, because the mean of its divisors is an integer number (6612475).

Almost surely, 2^13224949 is an apocalyptic number.

It is an amenable number.

13224949 is a deficient number, since it is larger than the sum of its proper divisors (1).

13224949 is an equidigital number, since it uses as much as digits as its factorization.

13224949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 34.

The square root of 13224949 is about 3636.6122971799. The cubic root of 13224949 is about 236.4819522363.

The spelling of 13224949 in words is "thirteen million, two hundred twenty-four thousand, nine hundred forty-nine".