1223456229 has 24 divisors (see below), whose sum is σ = 1781339040. Its totient is φ = 809142432.

The previous prime is 1223456203. The next prime is 1223456231. The reversal of 1223456229 is 9226543221.

1223456229 is a `hidden beast` number, since 1 + 2 + 23 + 4 + 5 + 622 + 9 = 666.

It is not a de Polignac number, because 1223456229 - 2⁵ = 1223456197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1223456193 and 1223456202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223456249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1051402 + ... + 1052564.

It is an arithmetic number, because the mean of its divisors is an integer number (74222460).

Almost surely, 2^1223456229 is an apocalyptic number.

It is an amenable number.

1223456229 is a deficient number, since it is larger than the sum of its proper divisors (557882811).

1223456229 is a wasteful number, since it uses less digits than its factorization.

1223456229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001 (or 1998 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 1223456229 is about 34977.9391760006. The cubic root of 1223456229 is about 1069.5378179764.

The spelling of 1223456229 in words is "one billion, two hundred twenty-three million, four hundred fifty-six thousand, two hundred twenty-nine".