13249903 has 2 divisors, whose sum is σ = 13249904. Its totient is φ = 13249902.

The previous prime is 13249889. The next prime is 13249933. The reversal of 13249903 is 30994231.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13249903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13249933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6624951 + 6624952.

It is an arithmetic number, because the mean of its divisors is an integer number (6624952).

Almost surely, 2^13249903 is an apocalyptic number.

13249903 is a deficient number, since it is larger than the sum of its proper divisors (1).

13249903 is an equidigital number, since it uses as much as digits as its factorization.

13249903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 13249903 is about 3640.0416206412. The cubic root of 13249903 is about 236.6305971172.

The spelling of 13249903 in words is "thirteen million, two hundred forty-nine thousand, nine hundred three".