13990841 has 2 divisors, whose sum is σ = 13990842. Its totient is φ = 13990840.

The previous prime is 13990807. The next prime is 13990849. The reversal of 13990841 is 14809931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11971600 + 2019241 = 3460^2 + 1421^2 .

It is a cyclic number.

It is not a de Polignac number, because 13990841 - 2¹⁰ = 13989817 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13990849) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6995420 + 6995421.

It is an arithmetic number, because the mean of its divisors is an integer number (6995421).

Almost surely, 2^13990841 is an apocalyptic number.

It is an amenable number.

13990841 is a deficient number, since it is larger than the sum of its proper divisors (1).

13990841 is an equidigital number, since it uses as much as digits as its factorization.

13990841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 13990841 is about 3740.4332636741. The cubic root of 13990841 is about 240.9616566352.

The spelling of 13990841 in words is "thirteen million, nine hundred ninety thousand, eight hundred forty-one".