14177981 has 2 divisors, whose sum is σ = 14177982. Its totient is φ = 14177980.

The previous prime is 14177963. The next prime is 14178001. The reversal of 14177981 is 18977141.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13942756 + 235225 = 3734^2 + 485^2 .

It is an emirp because it is prime and its reverse (18977141) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14177981 - 2¹⁴ = 14161597 is a prime.

It is a super-2 number, since 2×14177981² = 402030290472722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14177941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7088990 + 7088991.

It is an arithmetic number, because the mean of its divisors is an integer number (7088991).

Almost surely, 2^14177981 is an apocalyptic number.

It is an amenable number.

14177981 is a deficient number, since it is larger than the sum of its proper divisors (1).

14177981 is an equidigital number, since it uses as much as digits as its factorization.

14177981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112, while the sum is 38.

The square root of 14177981 is about 3765.3659848679. The cubic root of 14177981 is about 242.0312609025.

The spelling of 14177981 in words is "fourteen million, one hundred seventy-seven thousand, nine hundred eighty-one".