13802249 has 4 divisors (see below), whose sum is σ = 14614164. Its totient is φ = 12990336.

The previous prime is 13802237. The next prime is 13802263. The reversal of 13802249 is 94220831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94220831 = 5477 ⋅17203.

It can be written as a sum of positive squares in 2 ways, for example, as 10843849 + 2958400 = 3293^2 + 1720^2 .

It is a cyclic number.

It is not a de Polignac number, because 13802249 - 2⁸ = 13801993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13802219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 405932 + ... + 405965.

It is an arithmetic number, because the mean of its divisors is an integer number (3653541).

Almost surely, 2^13802249 is an apocalyptic number.

It is an amenable number.

13802249 is a deficient number, since it is larger than the sum of its proper divisors (811915).

13802249 is an equidigital number, since it uses as much as digits as its factorization.

13802249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811914.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 13802249 is about 3715.1378170937. The cubic root of 13802249 is about 239.8740600820.

The spelling of 13802249 in words is "thirteen million, eight hundred two thousand, two hundred forty-nine".