23449 has 4 divisors (see below), whose sum is σ = 23760. Its totient is φ = 23140.

The previous prime is 23447. The next prime is 23459. The reversal of 23449 is 94432.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 23449 - 2¹ = 23447 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

23449 is a lucky number.

It is a plaindrome in base 5, base 10 and base 11.

It is not an unprimeable number, because it can be changed into a prime (23447) 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, 42 + ... + 220.

It is an arithmetic number, because the mean of its divisors is an integer number (5940).

2²³⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

23449 is a deficient number, since it is larger than the sum of its proper divisors (311).

23449 is a wasteful number, since it uses less digits than its factorization.

23449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310.

The product of its digits is 864, while the sum is 22.

The square root of 23449 is about 153.1306631606. The cubic root of 23449 is about 28.6225359078.

The spelling of 23449 in words is "twenty-three thousand, four hundred forty-nine".