22843309 has 4 divisors (see below), whose sum is σ = 22983616. Its totient is φ = 22703004.

The previous prime is 22843297. The next prime is 22843313. The reversal of 22843309 is 90334822.

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 22843309 - 2⁹ = 22842797 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 (22843369) 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, 69909 + ... + 70234.

It is an arithmetic number, because the mean of its divisors is an integer number (5745904).

Almost surely, 2^22843309 is an apocalyptic number.

It is an amenable number.

22843309 is a deficient number, since it is larger than the sum of its proper divisors (140307).

22843309 is a wasteful number, since it uses less digits than its factorization.

22843309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140306.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 22843309 is about 4779.4674389517. The cubic root of 22843309 is about 283.7394166326.

The spelling of 22843309 in words is "twenty-two million, eight hundred forty-three thousand, three hundred nine".