23194389 has 4 divisors (see below), whose sum is σ = 30925856. Its totient is φ = 15462924.

The previous prime is 23194387. The next prime is 23194427. The reversal of 23194389 is 98349132.

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 not a de Polignac number, because 23194389 - 2¹ = 23194387 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23194387) 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, 3865729 + ... + 3865734.

It is an arithmetic number, because the mean of its divisors is an integer number (7731464).

Almost surely, 2^23194389 is an apocalyptic number.

It is an amenable number.

23194389 is a deficient number, since it is larger than the sum of its proper divisors (7731467).

23194389 is an equidigital number, since it uses as much as digits as its factorization.

23194389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7731466.

The product of its digits is 46656, while the sum is 39.

The square root of 23194389 is about 4816.0553360608. The cubic root of 23194389 is about 285.1856346778.

The spelling of 23194389 in words is "twenty-three million, one hundred ninety-four thousand, three hundred eighty-nine".