11672209 has 4 divisors (see below), whose sum is σ = 11685604. Its totient is φ = 11658816.

The previous prime is 11672191. The next prime is 11672273. The reversal of 11672209 is 90227611.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4665600 + 7006609 = 2160^2 + 2647^2 .

It is a cyclic number.

It is not a de Polignac number, because 11672209 - 2¹³ = 11664017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11672299) 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, 5292 + ... + 7165.

It is an arithmetic number, because the mean of its divisors is an integer number (2921401).

Almost surely, 2^11672209 is an apocalyptic number.

It is an amenable number.

11672209 is a deficient number, since it is larger than the sum of its proper divisors (13395).

11672209 is an equidigital number, since it uses as much as digits as its factorization.

11672209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13394.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 11672209 is about 3416.4614735132. The cubic root of 11672209 is about 226.8389796523.

It can be divided in two parts, 11672 and 209, that added together give a square (11881 = 109²).

The spelling of 11672209 in words is "eleven million, six hundred seventy-two thousand, two hundred nine".