23799421 has 4 divisors (see below), whose sum is σ = 23809212. Its totient is φ = 23789632.

The previous prime is 23799403. The next prime is 23799463. The reversal of 23799421 is 12499732.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 22325625 + 1473796 = 4725^2 + 1214^2 .

It is a cyclic number.

It is not a de Polignac number, because 23799421 - 2¹¹ = 23797373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23799481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1845 + ... + 7141.

It is an arithmetic number, because the mean of its divisors is an integer number (5952303).

Almost surely, 2^23799421 is an apocalyptic number.

It is an amenable number.

23799421 is a deficient number, since it is larger than the sum of its proper divisors (9791).

23799421 is an equidigital number, since it uses as much as digits as its factorization.

23799421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9790.

The product of its digits is 27216, while the sum is 37.

The square root of 23799421 is about 4878.4650249848. The cubic root of 23799421 is about 287.6440956308.

The spelling of 23799421 in words is "twenty-three million, seven hundred ninety-nine thousand, four hundred twenty-one".