1223459479 has 4 divisors (see below), whose sum is σ = 1334683080. Its totient is φ = 1112235880.

The previous prime is 1223459449. The next prime is 1223459483. The reversal of 1223459479 is 9749543221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1223459479 - 2⁹ = 1223458967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223459429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55611784 + ... + 55611805.

It is an arithmetic number, because the mean of its divisors is an integer number (333670770).

Almost surely, 2^1223459479 is an apocalyptic number.

1223459479 is a deficient number, since it is larger than the sum of its proper divisors (111223601).

1223459479 is a wasteful number, since it uses less digits than its factorization.

1223459479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111223600.

The product of its digits is 544320, while the sum is 46.

The square root of 1223459479 is about 34977.9856338240. The cubic root of 1223459479 is about 1069.5387650188.

The spelling of 1223459479 in words is "one billion, two hundred twenty-three million, four hundred fifty-nine thousand, four hundred seventy-nine".