22089994 has 4 divisors (see below), whose sum is σ = 33134994. Its totient is φ = 11044996.

The previous prime is 22089983. The next prime is 22090001. The reversal of 22089994 is 49998022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 18619225 + 3470769 = 4315^2 + 1863^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22089994.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5522497 + ... + 5522500.

Almost surely, 2^22089994 is an apocalyptic number.

22089994 is a deficient number, since it is larger than the sum of its proper divisors (11045000).

22089994 is a wasteful number, since it uses less digits than its factorization.

22089994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11044999.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 22089994 is about 4699.9993617021. Note that the first 3 decimals coincide. The cubic root of 22089994 is about 280.5854840746.

The spelling of 22089994 in words is "twenty-two million, eighty-nine thousand, nine hundred ninety-four".