13873961 has 2 divisors, whose sum is σ = 13873962. Its totient is φ = 13873960.

The previous prime is 13873939. The next prime is 13873963. The reversal of 13873961 is 16937831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8323225 + 5550736 = 2885^2 + 2356^2 .

It is a cyclic number.

It is not a de Polignac number, because 13873961 - 2¹⁴ = 13857577 is a prime.

Together with 13873963, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13873963) 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 as a sum of consecutive naturals, namely, 6936980 + 6936981.

It is an arithmetic number, because the mean of its divisors is an integer number (6936981).

Almost surely, 2^13873961 is an apocalyptic number.

It is an amenable number.

13873961 is a deficient number, since it is larger than the sum of its proper divisors (1).

13873961 is an equidigital number, since it uses as much as digits as its factorization.

13873961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 38.

The square root of 13873961 is about 3724.7766375986. The cubic root of 13873961 is about 240.2887785470.

The spelling of 13873961 in words is "thirteen million, eight hundred seventy-three thousand, nine hundred sixty-one".