13885009 has 2 divisors, whose sum is σ = 13885010. Its totient is φ = 13885008.

The previous prime is 13884967. The next prime is 13885033. The reversal of 13885009 is 90058831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9784384 + 4100625 = 3128^2 + 2025^2 .

It is a cyclic number.

It is not a de Polignac number, because 13885009 - 2²¹ = 11787857 is a prime.

It is not a weakly prime, because it can be changed into another prime (13885309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6942504 + 6942505.

It is an arithmetic number, because the mean of its divisors is an integer number (6942505).

Almost surely, 2^13885009 is an apocalyptic number.

It is an amenable number.

13885009 is a deficient number, since it is larger than the sum of its proper divisors (1).

13885009 is an equidigital number, since it uses as much as digits as its factorization.

13885009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 13885009 is about 3726.2593844229. The cubic root of 13885009 is about 240.3525432277.

The spelling of 13885009 in words is "thirteen million, eight hundred eighty-five thousand, nine".