13998449 has 4 divisors (see below), whose sum is σ = 14031360. Its totient is φ = 13965540.

The previous prime is 13998443. The next prime is 13998451. The reversal of 13998449 is 94489931.

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, and also an emirpimes, since its reverse is a distinct semiprime: 94489931 = 97 ⋅974123.

It is a cyclic number.

It is not a de Polignac number, because 13998449 - 2¹² = 13994353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13998443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15809 + ... + 16670.

It is an arithmetic number, because the mean of its divisors is an integer number (3507840).

Almost surely, 2^13998449 is an apocalyptic number.

It is an amenable number.

13998449 is a deficient number, since it is larger than the sum of its proper divisors (32911).

13998449 is an equidigital number, since it uses as much as digits as its factorization.

13998449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32910.

The product of its digits is 279936, while the sum is 47.

The square root of 13998449 is about 3741.4501199401. The cubic root of 13998449 is about 241.0053257778.

The spelling of 13998449 in words is "thirteen million, nine hundred ninety-eight thousand, four hundred forty-nine".