13994447 has 2 divisors, whose sum is σ = 13994448. Its totient is φ = 13994446.

The previous prime is 13994411. The next prime is 13994483. The reversal of 13994447 is 74449931.

It is a balanced prime because it is at equal distance from previous prime (13994411) and next prime (13994483).

It is a cyclic number.

It is not a de Polignac number, because 13994447 - 2²⁰ = 12945871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13994347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6997223 + 6997224.

It is an arithmetic number, because the mean of its divisors is an integer number (6997224).

Almost surely, 2^13994447 is an apocalyptic number.

13994447 is a deficient number, since it is larger than the sum of its proper divisors (1).

13994447 is an equidigital number, since it uses as much as digits as its factorization.

13994447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 41.

The square root of 13994447 is about 3740.9152623389. The cubic root of 13994447 is about 240.9823566797.

It can be divided in two parts, 13994 and 447, that added together give a palindrome (14441).

The spelling of 13994447 in words is "thirteen million, nine hundred ninety-four thousand, four hundred forty-seven".