1222783389 has 12 divisors (see below), whose sum is σ = 1807318656. Its totient is φ = 796230792.

The previous prime is 1222783381. The next prime is 1222783403. The reversal of 1222783389 is 9833872221.

It is not a de Polignac number, because 1222783389 - 2³ = 1222783381 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222783381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1579437 + ... + 1580210.

It is an arithmetic number, because the mean of its divisors is an integer number (150609888).

Almost surely, 2^1222783389 is an apocalyptic number.

It is an amenable number.

1222783389 is a deficient number, since it is larger than the sum of its proper divisors (584535267).

1222783389 is a wasteful number, since it uses less digits than its factorization.

1222783389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3159696 (or 3159693 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 1222783389 is about 34968.3197909193. The cubic root of 1222783389 is about 1069.3417178440.

The spelling of 1222783389 in words is "one billion, two hundred twenty-two million, seven hundred eighty-three thousand, three hundred eighty-nine".