23894809 has 12 divisors (see below), whose sum is σ = 25695900. Its totient is φ = 22212608.

The previous prime is 23894797. The next prime is 23894833. The reversal of 23894809 is 90849832.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 883600 + 23011209 = 940^2 + 4797^2 .

It is not a de Polignac number, because 23894809 - 2⁵ = 23894777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23894879) 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, 25257 + ... + 26185.

It is an arithmetic number, because the mean of its divisors is an integer number (2141325).

Almost surely, 2^23894809 is an apocalyptic number.

It is an amenable number.

23894809 is a deficient number, since it is larger than the sum of its proper divisors (1801091).

23894809 is an equidigital number, since it uses as much as digits as its factorization.

23894809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052 (or 1035 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 23894809 is about 4888.2316843619. The cubic root of 23894809 is about 288.0278755490.

The spelling of 23894809 in words is "twenty-three million, eight hundred ninety-four thousand, eight hundred nine".