1223459477 has 4 divisors (see below), whose sum is σ = 1229865216. Its totient is φ = 1217053740.

The previous prime is 1223459449. The next prime is 1223459483. The reversal of 1223459477 is 7749543221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1223459477 is a prime.

It is a super-2 number, since 2×1223459477² = 2993706183722227058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223459407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3202583 + ... + 3202964.

It is an arithmetic number, because the mean of its divisors is an integer number (307466304).

Almost surely, 2^1223459477 is an apocalyptic number.

It is an amenable number.

1223459477 is a deficient number, since it is larger than the sum of its proper divisors (6405739).

1223459477 is an equidigital number, since it uses as much as digits as its factorization.

1223459477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6405738.

The product of its digits is 423360, while the sum is 44.

The square root of 1223459477 is about 34977.9856052346. The cubic root of 1223459477 is about 1069.5387644360.

The spelling of 1223459477 in words is "one billion, two hundred twenty-three million, four hundred fifty-nine thousand, four hundred seventy-seven".