22549993 has 8 divisors (see below), whose sum is σ = 22837248. Its totient is φ = 22264704.

The previous prime is 22549987. The next prime is 22550009. The reversal of 22549993 is 39994522.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22549993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22549193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44580 + ... + 45082.

It is an arithmetic number, because the mean of its divisors is an integer number (2854656).

Almost surely, 2^22549993 is an apocalyptic number.

It is an amenable number.

22549993 is a deficient number, since it is larger than the sum of its proper divisors (287255).

22549993 is a wasteful number, since it uses less digits than its factorization.

22549993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983.

The product of its digits is 174960, while the sum is 43.

The square root of 22549993 is about 4748.6832911871. The cubic root of 22549993 is about 282.5197438364.

The spelling of 22549993 in words is "twenty-two million, five hundred forty-nine thousand, nine hundred ninety-three".