1223456669 has 8 divisors (see below), whose sum is σ = 1266069720. Its totient is φ = 1180872000.

The previous prime is 1223456653. The next prime is 1223456693. The reversal of 1223456669 is 9666543221.

It can be written as a sum of positive squares in 4 ways, for example, as 863595769 + 359860900 = 29387^2 + 18970^2 .

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 1223456669 - 2⁴ = 1223456653 is a prime.

It is a super-2 number, since 2×1223456669² = 2993692441841151122, which contains 22 as substring.

It is a Duffinian number.

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 (1223456609) 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, 118619 + ... + 128519.

It is an arithmetic number, because the mean of its divisors is an integer number (158258715).

Almost surely, 2^1223456669 is an apocalyptic number.

It is an amenable number.

1223456669 is a deficient number, since it is larger than the sum of its proper divisors (42613051).

1223456669 is an equidigital number, since it uses as much as digits as its factorization.

1223456669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14191.

The product of its digits is 466560, while the sum is 44.

The square root of 1223456669 is about 34977.9454656788. The cubic root of 1223456669 is about 1069.5379461915.

The spelling of 1223456669 in words is "one billion, two hundred twenty-three million, four hundred fifty-six thousand, six hundred sixty-nine".