10871209 has 2 divisors, whose sum is σ = 10871210. Its totient is φ = 10871208.

The previous prime is 10871197. The next prime is 10871213. The reversal of 10871209 is 90217801.

10871209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6656400 + 4214809 = 2580^2 + 2053^2 .

It is an emirp because it is prime and its reverse (90217801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10871209 - 2¹¹ = 10869161 is a prime.

It is not a weakly prime, because it can be changed into another prime (10871299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5435604 + 5435605.

It is an arithmetic number, because the mean of its divisors is an integer number (5435605).

Almost surely, 2^10871209 is an apocalyptic number.

It is an amenable number.

10871209 is a deficient number, since it is larger than the sum of its proper divisors (1).

10871209 is an equidigital number, since it uses as much as digits as its factorization.

10871209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 10871209 is about 3297.1516495302. The cubic root of 10871209 is about 221.5266338757.

It can be divided in two parts, 108 and 71209, that added together give a palindrome (71317).

The spelling of 10871209 in words is "ten million, eight hundred seventy-one thousand, two hundred nine".