22279709 has 8 divisors (see below), whose sum is σ = 23464320. Its totient is φ = 21113136.

The previous prime is 22279703. The next prime is 22279717. The reversal of 22279709 is 90797222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22279709 - 2²⁴ = 5502493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22279703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1937 + ... + 6950.

It is an arithmetic number, because the mean of its divisors is an integer number (2933040).

Almost surely, 2^22279709 is an apocalyptic number.

It is an amenable number.

22279709 is a deficient number, since it is larger than the sum of its proper divisors (1184611).

22279709 is a wasteful number, since it uses less digits than its factorization.

22279709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9019.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 22279709 is about 4720.1386632174. The cubic root of 22279709 is about 281.3864441494.

The spelling of 22279709 in words is "twenty-two million, two hundred seventy-nine thousand, seven hundred nine".