14439681 has 32 divisors (see below), whose sum is σ = 22907520. Its totient is φ = 8957952.

The previous prime is 14439679. The next prime is 14439683. The reversal of 14439681 is 18693441.

It is an interprime number because it is at equal distance from previous prime (14439679) and next prime (14439683).

It is not a de Polignac number, because 14439681 - 2¹ = 14439679 is a prime.

It is a super-2 number, since 2×14439681² = 417008774763522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (14439683) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74721 + ... + 74913.

It is an arithmetic number, because the mean of its divisors is an integer number (715860).

Almost surely, 2^14439681 is an apocalyptic number.

It is an amenable number.

14439681 is a deficient number, since it is larger than the sum of its proper divisors (8467839).

14439681 is a wasteful number, since it uses less digits than its factorization.

14439681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382 (or 376 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 14439681 is about 3799.9580260840. The cubic root of 14439681 is about 243.5113451082.

The spelling of 14439681 in words is "fourteen million, four hundred thirty-nine thousand, six hundred eighty-one".