23209453 has 4 divisors (see below), whose sum is σ = 23248800. Its totient is φ = 23170108.

The previous prime is 23209451. The next prime is 23209499. The reversal of 23209453 is 35490232.

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.

It is a cyclic number.

It is not a de Polignac number, because 23209453 - 2¹ = 23209451 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 (23209451) 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 3 ways as a sum of consecutive naturals, for example, 18775 + ... + 19972.

It is an arithmetic number, because the mean of its divisors is an integer number (5812200).

Almost surely, 2^23209453 is an apocalyptic number.

It is an amenable number.

23209453 is a deficient number, since it is larger than the sum of its proper divisors (39347).

23209453 is an equidigital number, since it uses as much as digits as its factorization.

23209453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39346.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 23209453 is about 4817.6190177306. The cubic root of 23209453 is about 285.2473609095.

Adding to 23209453 its reverse (35490232), we get a palindrome (58699685).

The spelling of 23209453 in words is "twenty-three million, two hundred nine thousand, four hundred fifty-three".