1223346789 has 36 divisors (see below), whose sum is σ = 2058127500. Its totient is φ = 698181120.

The previous prime is 1223346781. The next prime is 1223346791. The reversal of 1223346789 is 9876433221.

1223346789 is a `hidden beast` number, since 1 + 223 + 346 + 7 + 89 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 667188900 + 556157889 = 25830^2 + 23583^2 .

It is not a de Polignac number, because 1223346789 - 2³ = 1223346781 is a prime.

It is a super-3 number, since 3×1223346789³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 (1223346781) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 549699 + ... + 551919.

Almost surely, 2^1223346789 is an apocalyptic number.

It is an amenable number.

1223346789 is a deficient number, since it is larger than the sum of its proper divisors (834780711).

1223346789 is a wasteful number, since it uses less digits than its factorization.

1223346789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3490 (or 3480 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 1223346789 is about 34976.3747263778. The cubic root of 1223346789 is about 1069.5059264366.

The spelling of 1223346789 in words is "one billion, two hundred twenty-three million, three hundred forty-six thousand, seven hundred eighty-nine".