10902209 has 2 divisors, whose sum is σ = 10902210. Its totient is φ = 10902208.

The previous prime is 10902191. The next prime is 10902211. The reversal of 10902209 is 90220901.

10902209 is digitally balanced in base 3, 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., 9394225 + 1507984 = 3065^2 + 1228^2 .

It is a cyclic number.

It is not a de Polignac number, because 10902209 - 2¹⁶ = 10836673 is a prime.

It is a super-2 number, since 2×10902209² = 237716322159362, which contains 22 as substring.

Together with 10902211, 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 (10902239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5451104 + 5451105.

It is an arithmetic number, because the mean of its divisors is an integer number (5451105).

Almost surely, 2^10902209 is an apocalyptic number.

It is an amenable number.

10902209 is a deficient number, since it is larger than the sum of its proper divisors (1).

10902209 is an equidigital number, since it uses as much as digits as its factorization.

10902209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 10902209 is about 3301.8493302996. The cubic root of 10902209 is about 221.7370001874.

It can be divided in two parts, 10902 and 209, that added together give a palindrome (11111).

The spelling of 10902209 in words is "ten million, nine hundred two thousand, two hundred nine".