11229809 has 8 divisors (see below), whose sum is σ = 12054600. Its totient is φ = 10423296.

The previous prime is 11229793. The next prime is 11229847. The reversal of 11229809 is 90892211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5276209 + 5953600 = 2297^2 + 2440^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11229809 - 2⁴ = 11229793 is a prime.

It is a super-2 number, since 2×11229809² = 252217220352962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11229109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3284 + ... + 5765.

It is an arithmetic number, because the mean of its divisors is an integer number (1506825).

Almost surely, 2^11229809 is an apocalyptic number.

It is an amenable number.

11229809 is a deficient number, since it is larger than the sum of its proper divisors (824791).

11229809 is an equidigital number, since it uses as much as digits as its factorization.

11229809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9139.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 11229809 is about 3351.0907179603. The cubic root of 11229809 is about 223.9361066175.

The spelling of 11229809 in words is "eleven million, two hundred twenty-nine thousand, eight hundred nine".