23166009 has 12 divisors (see below), whose sum is σ = 33649252. Its totient is φ = 15357600.

The previous prime is 23166007. The next prime is 23166023. The reversal of 23166009 is 90066132.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6125625 + 17040384 = 2475^2 + 4128^2 .

It is not a de Polignac number, because 23166009 - 2¹ = 23166007 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23166007) 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 11 ways as a sum of consecutive naturals, for example, 5482 + ... + 8739.

Almost surely, 2^23166009 is an apocalyptic number.

It is an amenable number.

23166009 is a deficient number, since it is larger than the sum of its proper divisors (10483243).

23166009 is a wasteful number, since it uses less digits than its factorization.

23166009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14408 (or 14405 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 23166009 is about 4813.1080395104. The cubic root of 23166009 is about 285.0692721733.

The spelling of 23166009 in words is "twenty-three million, one hundred sixty-six thousand, nine".