22004009 has 2 divisors, whose sum is σ = 22004010. Its totient is φ = 22004008.

The previous prime is 22003979. The next prime is 22004039. The reversal of 22004009 is 90040022.

It is a balanced prime because it is at equal distance from previous prime (22003979) and next prime (22004039).

It can be written as a sum of positive squares in only one way, i.e., 19669225 + 2334784 = 4435^2 + 1528^2 .

It is a cyclic number.

It is not a de Polignac number, because 22004009 - 2¹⁶ = 21938473 is a prime.

It is not a weakly prime, because it can be changed into another prime (22004039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11002004 + 11002005.

It is an arithmetic number, because the mean of its divisors is an integer number (11002005).

Almost surely, 2^22004009 is an apocalyptic number.

It is an amenable number.

22004009 is a deficient number, since it is larger than the sum of its proper divisors (1).

22004009 is an equidigital number, since it uses as much as digits as its factorization.

22004009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 22004009 is about 4690.8431011919. The cubic root of 22004009 is about 280.2209522980.

The spelling of 22004009 in words is "twenty-two million, four thousand, nine".