14279981 has 4 divisors (see below), whose sum is σ = 14411100. Its totient is φ = 14148864.

The previous prime is 14279971. The next prime is 14280029. The reversal of 14279981 is 18997241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10824100 + 3455881 = 3290^2 + 1859^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14279981 is a prime.

It is a super-2 number, since 2×14279981² = 407835714720722, 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 (14279971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65396 + ... + 65613.

It is an arithmetic number, because the mean of its divisors is an integer number (3602775).

Almost surely, 2^14279981 is an apocalyptic number.

It is an amenable number.

14279981 is a deficient number, since it is larger than the sum of its proper divisors (131119).

14279981 is a wasteful number, since it uses less digits than its factorization.

14279981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131118.

The product of its digits is 36288, while the sum is 41.

The square root of 14279981 is about 3778.8862115708. The cubic root of 14279981 is about 242.6102860386.

The spelling of 14279981 in words is "fourteen million, two hundred seventy-nine thousand, nine hundred eighty-one".