1222838889 has 4 divisors (see below), whose sum is σ = 1630451856. Its totient is φ = 815225924.

The previous prime is 1222838887. The next prime is 1222838923. The reversal of 1222838889 is 9888382221.

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 1222838889 - 2¹ = 1222838887 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1222838887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203806479 + ... + 203806484.

It is an arithmetic number, because the mean of its divisors is an integer number (407612964).

Almost surely, 2^1222838889 is an apocalyptic number.

It is an amenable number.

1222838889 is a deficient number, since it is larger than the sum of its proper divisors (407612967).

1222838889 is an equidigital number, since it uses as much as digits as its factorization.

1222838889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407612966.

The product of its digits is 884736, while the sum is 51.

The square root of 1222838889 is about 34969.1133573615. The cubic root of 1222838889 is about 1069.3578961161.

The spelling of 1222838889 in words is "one billion, two hundred twenty-two million, eight hundred thirty-eight thousand, eight hundred eighty-nine".