10418209 has 4 divisors (see below), whose sum is σ = 10428804. Its totient is φ = 10407616.

The previous prime is 10418203. The next prime is 10418227. The reversal of 10418209 is 90281401.

It is a happy number.

10418209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1507984 + 8910225 = 1228^2 + 2985^2 .

It is a cyclic number.

It is not a de Polignac number, because 10418209 - 2⁷ = 10418081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10418203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3652 + ... + 5845.

It is an arithmetic number, because the mean of its divisors is an integer number (2607201).

Almost surely, 2^10418209 is an apocalyptic number.

It is an amenable number.

10418209 is a deficient number, since it is larger than the sum of its proper divisors (10595).

10418209 is an equidigital number, since it uses as much as digits as its factorization.

10418209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10594.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 10418209 is about 3227.7250502482. The cubic root of 10418209 is about 218.4058944703.

The spelling of 10418209 in words is "ten million, four hundred eighteen thousand, two hundred nine".