11453209 has 4 divisors (see below), whose sum is σ = 11462416. Its totient is φ = 11444004.

The previous prime is 11453207. The next prime is 11453237. The reversal of 11453209 is 90235411.

11453209 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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11453209 - 2¹ = 11453207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11453201) 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, 2379 + ... + 5344.

It is an arithmetic number, because the mean of its divisors is an integer number (2865604).

Almost surely, 2^11453209 is an apocalyptic number.

It is an amenable number.

11453209 is a deficient number, since it is larger than the sum of its proper divisors (9207).

11453209 is an equidigital number, since it uses as much as digits as its factorization.

11453209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9206.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 11453209 is about 3384.2590030906. The cubic root of 11453209 is about 225.4113233203.

The spelling of 11453209 in words is "eleven million, four hundred fifty-three thousand, two hundred nine".