22429985 has 4 divisors (see below), whose sum is σ = 26915988. Its totient is φ = 17943984.

The previous prime is 22429949. The next prime is 22429999. The reversal of 22429985 is 58992422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58992422 = 2 ⋅29496211.

It can be written as a sum of positive squares in 2 ways, for example, as 7997584 + 14432401 = 2828^2 + 3799^2 .

It is a cyclic number.

It is not a de Polignac number, because 22429985 - 2¹⁰ = 22428961 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2242994 + ... + 2243003.

It is an arithmetic number, because the mean of its divisors is an integer number (6728997).

Almost surely, 2^22429985 is an apocalyptic number.

It is an amenable number.

22429985 is a deficient number, since it is larger than the sum of its proper divisors (4486003).

22429985 is an equidigital number, since it uses as much as digits as its factorization.

22429985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4486002.

The product of its digits is 103680, while the sum is 41.

The square root of 22429985 is about 4736.0305108814. The cubic root of 22429985 is about 282.0176748977.

The spelling of 22429985 in words is "twenty-two million, four hundred twenty-nine thousand, nine hundred eighty-five".