14183981 has 6 divisors (see below), whose sum is σ = 16499790. Its totient is φ = 12157656.

The previous prime is 14183969. The next prime is 14183999. The reversal of 14183981 is 18938141.

It can be written as a sum of positive squares in only one way, i.e., 14182756 + 1225 = 3766^2 + 35^2 .

It is not a de Polignac number, because 14183981 - 2²² = 9989677 is a prime.

It is a super-2 number, since 2×14183981² = 402370634016722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14183921) 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 5 ways as a sum of consecutive naturals, for example, 144686 + ... + 144783.

It is an arithmetic number, because the mean of its divisors is an integer number (2749965).

Almost surely, 2^14183981 is an apocalyptic number.

It is an amenable number.

14183981 is a deficient number, since it is larger than the sum of its proper divisors (2315809).

14183981 is an equidigital number, since it uses as much as digits as its factorization.

14183981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289483 (or 289476 counting only the distinct ones).

The product of its digits is 6912, while the sum is 35.

The square root of 14183981 is about 3766.1626358935. The cubic root of 14183981 is about 242.0653979390.

The spelling of 14183981 in words is "fourteen million, one hundred eighty-three thousand, nine hundred eighty-one".