22201989 has 4 divisors (see below), whose sum is σ = 29602656. Its totient is φ = 14801324.

The previous prime is 22201967. The next prime is 22201999. The reversal of 22201989 is 98910222.

It is a happy number.

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 22201989 - 2⁵ = 22201957 is a prime.

It is a super-2 number, since 2×22201989² = 985856631112242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3700329 + ... + 3700334.

It is an arithmetic number, because the mean of its divisors is an integer number (7400664).

Almost surely, 2^22201989 is an apocalyptic number.

It is an amenable number.

22201989 is a deficient number, since it is larger than the sum of its proper divisors (7400667).

22201989 is an equidigital number, since it uses as much as digits as its factorization.

22201989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7400666.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 22201989 is about 4711.8986618984. The cubic root of 22201989 is about 281.0588690549.

The spelling of 22201989 in words is "twenty-two million, two hundred one thousand, nine hundred eighty-nine".