23085909 has 36 divisors (see below), whose sum is σ = 42325920. Its totient is φ = 11990160.

The previous prime is 23085901. The next prime is 23085929. The reversal of 23085909 is 90958032.

It is not a de Polignac number, because 23085909 - 2³ = 23085901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23085901) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2472 + ... + 7230.

It is an arithmetic number, because the mean of its divisors is an integer number (1175720).

Almost surely, 2^23085909 is an apocalyptic number.

It is an amenable number.

23085909 is a deficient number, since it is larger than the sum of its proper divisors (19240011).

23085909 is a wasteful number, since it uses less digits than its factorization.

23085909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4790 (or 4780 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 23085909 is about 4804.7798076499. The cubic root of 23085909 is about 284.7403359753.

The spelling of 23085909 in words is "twenty-three million, eighty-five thousand, nine hundred nine".