1222345789 has 8 divisors (see below), whose sum is σ = 1417817408. Its totient is φ = 1032086880.

The previous prime is 1222345783. The next prime is 1222345811. The reversal of 1222345789 is 9875432221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1222345789 - 2⁵ = 1222345757 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222345783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1302672 + ... + 1303609.

It is an arithmetic number, because the mean of its divisors is an integer number (177227176).

Almost surely, 2^1222345789 is an apocalyptic number.

It is an amenable number.

1222345789 is a deficient number, since it is larger than the sum of its proper divisors (195471619).

1222345789 is an equidigital number, since it uses as much as digits as its factorization.

1222345789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2606355.

The product of its digits is 241920, while the sum is 43.

The square root of 1222345789 is about 34962.0621388384. The cubic root of 1222345789 is about 1069.2141401191.

The spelling of 1222345789 in words is "one billion, two hundred twenty-two million, three hundred forty-five thousand, seven hundred eighty-nine".