22084509 has 4 divisors (see below), whose sum is σ = 29446016. Its totient is φ = 14723004.

The previous prime is 22084477. The next prime is 22084511. The reversal of 22084509 is 90548022.

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 not a de Polignac number, because 22084509 - 2⁵ = 22084477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22084519) 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, 3680749 + ... + 3680754.

It is an arithmetic number, because the mean of its divisors is an integer number (7361504).

Almost surely, 2^22084509 is an apocalyptic number.

It is an amenable number.

22084509 is a deficient number, since it is larger than the sum of its proper divisors (7361507).

22084509 is an equidigital number, since it uses as much as digits as its factorization.

22084509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7361506.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 22084509 is about 4699.4158147583. The cubic root of 22084509 is about 280.5622587963.

The spelling of 22084509 in words is "twenty-two million, eighty-four thousand, five hundred nine".