23439451 has 4 divisors (see below), whose sum is σ = 26787952. Its totient is φ = 20090952.

The previous prime is 23439439. The next prime is 23439457. The reversal of 23439451 is 15493432.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 23439451 - 2⁹ = 23438939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23439457) 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, 1674240 + ... + 1674253.

It is an arithmetic number, because the mean of its divisors is an integer number (6696988).

Almost surely, 2^23439451 is an apocalyptic number.

23439451 is a deficient number, since it is larger than the sum of its proper divisors (3348501).

23439451 is an equidigital number, since it uses as much as digits as its factorization.

23439451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3348500.

The product of its digits is 12960, while the sum is 31.

The square root of 23439451 is about 4841.4306769797. The cubic root of 23439451 is about 286.1865011735.

The spelling of 23439451 in words is "twenty-three million, four hundred thirty-nine thousand, four hundred fifty-one".