22279849 has 4 divisors (see below), whose sum is σ = 22319440. Its totient is φ = 22240260.

The previous prime is 22279813. The next prime is 22279853. The reversal of 22279849 is 94897222.

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 22279849 - 2²¹ = 20182697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22279879) 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, 18939 + ... + 20080.

It is an arithmetic number, because the mean of its divisors is an integer number (5579860).

Almost surely, 2^22279849 is an apocalyptic number.

It is an amenable number.

22279849 is a deficient number, since it is larger than the sum of its proper divisors (39591).

22279849 is an equidigital number, since it uses as much as digits as its factorization.

22279849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39590.

The product of its digits is 145152, while the sum is 43.

The square root of 22279849 is about 4720.1534932669. The cubic root of 22279849 is about 281.3870335350.

The spelling of 22279849 in words is "twenty-two million, two hundred seventy-nine thousand, eight hundred forty-nine".