1223455579 has 16 divisors (see below), whose sum is σ = 1302773760. Its totient is φ = 1146912480.

The previous prime is 1223455559. The next prime is 1223455591. The reversal of 1223455579 is 9755543221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1223455579 - 2¹³ = 1223447387 is a prime.

It is a super-3 number, since 3×1223455579³ (a number of 28 digits) contains 333 as substring.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1223455549) 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 15 ways as a sum of consecutive naturals, for example, 271902 + ... + 276364.

It is an arithmetic number, because the mean of its divisors is an integer number (81423360).

Almost surely, 2^1223455579 is an apocalyptic number.

1223455579 is a deficient number, since it is larger than the sum of its proper divisors (79318181).

1223455579 is a wasteful number, since it uses less digits than its factorization.

1223455579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4770.

The product of its digits is 378000, while the sum is 43.

The square root of 1223455579 is about 34977.9298844286. The cubic root of 1223455579 is about 1069.5376285677.

The spelling of 1223455579 in words is "one billion, two hundred twenty-three million, four hundred fifty-five thousand, five hundred seventy-nine".