14003981 has 2 divisors, whose sum is σ = 14003982. Its totient is φ = 14003980.

The previous prime is 14003917. The next prime is 14004041. The reversal of 14003981 is 18930041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9821956 + 4182025 = 3134^2 + 2045^2 .

It is a cyclic number.

It is not a de Polignac number, because 14003981 - 2⁶ = 14003917 is a prime.

It is a super-2 number, since 2×14003981² = 392222967696722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 14003981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14003081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7001990 + 7001991.

It is an arithmetic number, because the mean of its divisors is an integer number (7001991).

Almost surely, 2^14003981 is an apocalyptic number.

It is an amenable number.

14003981 is a deficient number, since it is larger than the sum of its proper divisors (1).

14003981 is an equidigital number, since it uses as much as digits as its factorization.

14003981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 14003981 is about 3742.1893324630. The cubic root of 14003981 is about 241.0370689581.

The spelling of 14003981 in words is "fourteen million, three thousand, nine hundred eighty-one".