23683409 has 4 divisors (see below), whose sum is σ = 23787060. Its totient is φ = 23579760.

The previous prime is 23683393. The next prime is 23683417. The reversal of 23683409 is 90438632.

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 16581184 + 7102225 = 4072^2 + 2665^2 .

It is a cyclic number.

It is not a de Polignac number, because 23683409 - 2⁴ = 23683393 is a prime.

It is a super-2 number, since 2×23683409² = 1121807723722562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23683109) 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, 51482 + ... + 51939.

It is an arithmetic number, because the mean of its divisors is an integer number (5946765).

Almost surely, 2^23683409 is an apocalyptic number.

It is an amenable number.

23683409 is a deficient number, since it is larger than the sum of its proper divisors (103651).

23683409 is a wasteful number, since it uses less digits than its factorization.

23683409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103650.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 23683409 is about 4866.5602842254. The cubic root of 23683409 is about 287.1759534870.

The spelling of 23683409 in words is "twenty-three million, six hundred eighty-three thousand, four hundred nine".