13040249 has 4 divisors (see below), whose sum is σ = 13088640. Its totient is φ = 12991860.

The previous prime is 13040231. The next prime is 13040257. The reversal of 13040249 is 94204031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13040249 - 2⁸ = 13039993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13040219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23789 + ... + 24330.

It is an arithmetic number, because the mean of its divisors is an integer number (3272160).

Almost surely, 2^13040249 is an apocalyptic number.

It is an amenable number.

13040249 is a deficient number, since it is larger than the sum of its proper divisors (48391).

13040249 is an equidigital number, since it uses as much as digits as its factorization.

13040249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48390.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 13040249 is about 3611.1284939753. The cubic root of 13040249 is about 235.3758825356.

The spelling of 13040249 in words is "thirteen million, forty thousand, two hundred forty-nine".