13873217 has 2 divisors, whose sum is σ = 13873218. Its totient is φ = 13873216.

The previous prime is 13873183. The next prime is 13873229. The reversal of 13873217 is 71237831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13868176 + 5041 = 3724^2 + 71^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13873217 is a prime.

It is a super-2 number, since 2×13873217² = 384932299858178, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13873267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6936608 + 6936609.

It is an arithmetic number, because the mean of its divisors is an integer number (6936609).

Almost surely, 2^13873217 is an apocalyptic number.

It is an amenable number.

13873217 is a deficient number, since it is larger than the sum of its proper divisors (1).

13873217 is an equidigital number, since it uses as much as digits as its factorization.

13873217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7056, while the sum is 32.

The square root of 13873217 is about 3724.6767644992. The cubic root of 13873217 is about 240.2844832573.

The spelling of 13873217 in words is "thirteen million, eight hundred seventy-three thousand, two hundred seventeen".