11229209 has 8 divisors (see below), whose sum is σ = 11880480. Its totient is φ = 10584000.

The previous prime is 11229191. The next prime is 11229217. The reversal of 11229209 is 90292211.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11229209 is a prime.

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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2609 + ... + 5409.

It is an arithmetic number, because the mean of its divisors is an integer number (1485060).

Almost surely, 2^11229209 is an apocalyptic number.

11229209 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

11229209 is a deficient number, since it is larger than the sum of its proper divisors (651271).

11229209 is a wasteful number, since it uses less digits than its factorization.

11229209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3031.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 11229209 is about 3351.0011936733. The cubic root of 11229209 is about 223.9321183022.

It can be divided in two parts, 11229 and 209, that multiplied together give a triangular number (2346861 = T₂₁₆₆).

The spelling of 11229209 in words is "eleven million, two hundred twenty-nine thousand, two hundred nine".