22190849 has 4 divisors (see below), whose sum is σ = 22352964. Its totient is φ = 22028736.

The previous prime is 22190821. The next prime is 22190893. The reversal of 22190849 is 94809122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94809122 = 2 ⋅47404561.

It can be written as a sum of positive squares in 2 ways, for example, as 11950849 + 10240000 = 3457^2 + 3200^2 .

It is a cyclic number.

It is not a de Polignac number, because 22190849 - 2²⁰ = 21142273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22190449) 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, 80852 + ... + 81125.

It is an arithmetic number, because the mean of its divisors is an integer number (5588241).

Almost surely, 2^22190849 is an apocalyptic number.

It is an amenable number.

22190849 is a deficient number, since it is larger than the sum of its proper divisors (162115).

22190849 is a wasteful number, since it uses less digits than its factorization.

22190849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162114.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 22190849 is about 4710.7163998696. The cubic root of 22190849 is about 281.0118534532.

The spelling of 22190849 in words is "twenty-two million, one hundred ninety thousand, eight hundred forty-nine".