1222443859 has 16 divisors (see below), whose sum is σ = 1569964032. Its totient is φ = 925154208.

The previous prime is 1222443847. The next prime is 1222443883. The reversal of 1222443859 is 9583442221.

It is not a de Polignac number, because 1222443859 - 2¹¹ = 1222441811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222443839) 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, 289939 + ... + 294124.

It is an arithmetic number, because the mean of its divisors is an integer number (98122752).

Almost surely, 2^1222443859 is an apocalyptic number.

1222443859 is a deficient number, since it is larger than the sum of its proper divisors (347520173).

1222443859 is a wasteful number, since it uses less digits than its factorization.

1222443859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584106.

The product of its digits is 138240, while the sum is 40.

The square root of 1222443859 is about 34963.4646309544. The cubic root of 1222443859 is about 1069.2427340537.

The spelling of 1222443859 in words is "one billion, two hundred twenty-two million, four hundred forty-three thousand, eight hundred fifty-nine".