11418209 has 4 divisors (see below), whose sum is σ = 12456240. Its totient is φ = 10380180.

The previous prime is 11418193. The next prime is 11418229. The reversal of 11418209 is 90281411.

11418209 = 383² + 384² + ... + 448².

11418209 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 Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11418209 - 2⁴ = 11418193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11418229) 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, 518999 + ... + 519020.

It is an arithmetic number, because the mean of its divisors is an integer number (3114060).

Almost surely, 2^11418209 is an apocalyptic number.

It is an amenable number.

11418209 is a deficient number, since it is larger than the sum of its proper divisors (1038031).

11418209 is a wasteful number, since it uses less digits than its factorization.

11418209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038030.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 11418209 is about 3379.0840474898. The cubic root of 11418209 is about 225.1814766336.

The spelling of 11418209 in words is "eleven million, four hundred eighteen thousand, two hundred nine".