22184993 has 2 divisors, whose sum is σ = 22184994. Its totient is φ = 22184992.

The previous prime is 22184969. The next prime is 22184999. The reversal of 22184993 is 39948122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20502784 + 1682209 = 4528^2 + 1297^2 .

It is a cyclic number.

It is not a de Polignac number, because 22184993 - 2¹⁰ = 22183969 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (22184999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11092496 + 11092497.

It is an arithmetic number, because the mean of its divisors is an integer number (11092497).

Almost surely, 2^22184993 is an apocalyptic number.

It is an amenable number.

22184993 is a deficient number, since it is larger than the sum of its proper divisors (1).

22184993 is an equidigital number, since it uses as much as digits as its factorization.

22184993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 38.

The square root of 22184993 is about 4710.0947973475. The cubic root of 22184993 is about 280.9871322992.

The spelling of 22184993 in words is "twenty-two million, one hundred eighty-four thousand, nine hundred ninety-three".