22394843 has 4 divisors (see below), whose sum is σ = 22565928. Its totient is φ = 22223760.

The previous prime is 22394839. The next prime is 22394851. The reversal of 22394843 is 34849322.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34849322 = 2 ⋅17424661.

It is a cyclic number.

It is not a de Polignac number, because 22394843 - 2² = 22394839 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22394833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85346 + ... + 85607.

It is an arithmetic number, because the mean of its divisors is an integer number (5641482).

Almost surely, 2^22394843 is an apocalyptic number.

22394843 is a deficient number, since it is larger than the sum of its proper divisors (171085).

22394843 is a wasteful number, since it uses less digits than its factorization.

22394843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171084.

The product of its digits is 41472, while the sum is 35.

The square root of 22394843 is about 4732.3189875578. The cubic root of 22394843 is about 281.8703149321.

The spelling of 22394843 in words is "twenty-two million, three hundred ninety-four thousand, eight hundred forty-three".