22179449 has 4 divisors (see below), whose sum is σ = 22195536. Its totient is φ = 22163364.

The previous prime is 22179433. The next prime is 22179463. The reversal of 22179449 is 94497122.

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 22179449 - 2⁴ = 22179433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22179149) 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, 5759 + ... + 8804.

It is an arithmetic number, because the mean of its divisors is an integer number (5548884).

Almost surely, 2^22179449 is an apocalyptic number.

It is an amenable number.

22179449 is a deficient number, since it is larger than the sum of its proper divisors (16087).

22179449 is a wasteful number, since it uses less digits than its factorization.

22179449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16086.

The product of its digits is 36288, while the sum is 38.

The square root of 22179449 is about 4709.5062373884. The cubic root of 22179449 is about 280.9637242466.

The spelling of 22179449 in words is "twenty-two million, one hundred seventy-nine thousand, four hundred forty-nine".