13998447 has 16 divisors (see below), whose sum is σ = 20800000. Its totient is φ = 9304632.

The previous prime is 13998443. The next prime is 13998451. The reversal of 13998447 is 74489931.

It is an interprime number because it is at equal distance from previous prime (13998443) and next prime (13998451).

It is not a de Polignac number, because 13998447 - 2² = 13998443 is a prime.

It is a Duffinian number.

It is a congruent number.

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

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12954 + ... + 13992.

It is an arithmetic number, because the mean of its divisors is an integer number (1300000).

Almost surely, 2^13998447 is an apocalyptic number.

13998447 is a deficient number, since it is larger than the sum of its proper divisors (6801553).

13998447 is a wasteful number, since it uses less digits than its factorization.

13998447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547 (or 1541 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 13998447 is about 3741.4498526641. The cubic root of 13998447 is about 241.0053143000.

The spelling of 13998447 in words is "thirteen million, nine hundred ninety-eight thousand, four hundred forty-seven".