1224779259 has 16 divisors (see below), whose sum is σ = 1782267264. Its totient is φ = 741969600.

The previous prime is 1224779239. The next prime is 1224779293. The reversal of 1224779259 is 9529774221.

It is a de Polignac number, because none of the positive numbers 2^k-1224779259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1224779209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85879 + ... + 99119.

It is an arithmetic number, because the mean of its divisors is an integer number (111391704).

Almost surely, 2^1224779259 is an apocalyptic number.

1224779259 is a deficient number, since it is larger than the sum of its proper divisors (557488005).

1224779259 is a wasteful number, since it uses less digits than its factorization.

1224779259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16058.

The product of its digits is 635040, while the sum is 48.

The square root of 1224779259 is about 34996.8464150700. The cubic root of 1224779259 is about 1069.9232072876.

The spelling of 1224779259 in words is "one billion, two hundred twenty-four million, seven hundred seventy-nine thousand, two hundred fifty-nine".