23170849 has 4 divisors (see below), whose sum is σ = 24953236. Its totient is φ = 21388464.

The previous prime is 23170837. The next prime is 23170877. The reversal of 23170849 is 94807132.

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 8294400 + 14876449 = 2880^2 + 3857^2 .

It is a cyclic number.

It is not a de Polignac number, because 23170849 - 2¹⁵ = 23138081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23170879) 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 3 ways as a sum of consecutive naturals, for example, 891174 + ... + 891199.

It is an arithmetic number, because the mean of its divisors is an integer number (6238309).

Almost surely, 2^23170849 is an apocalyptic number.

It is an amenable number.

23170849 is a deficient number, since it is larger than the sum of its proper divisors (1782387).

23170849 is a wasteful number, since it uses less digits than its factorization.

23170849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1782386.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 23170849 is about 4813.6108068684. The cubic root of 23170849 is about 285.0891236606.

The spelling of 23170849 in words is "twenty-three million, one hundred seventy thousand, eight hundred forty-nine".