1222395959 has 4 divisors (see below), whose sum is σ = 1250823816. Its totient is φ = 1193968104.

The previous prime is 1222395953. The next prime is 1222395961. The reversal of 1222395959 is 9595932221.

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 1222395959 - 2⁸ = 1222395703 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 (1222395953) 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, 14213864 + ... + 14213949.

It is an arithmetic number, because the mean of its divisors is an integer number (312705954).

Almost surely, 2^1222395959 is an apocalyptic number.

1222395959 is a deficient number, since it is larger than the sum of its proper divisors (28427857).

1222395959 is an equidigital number, since it uses as much as digits as its factorization.

1222395959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28427856.

The product of its digits is 437400, while the sum is 47.

The square root of 1222395959 is about 34962.7796234796. The cubic root of 1222395959 is about 1069.2287682056.

The spelling of 1222395959 in words is "one billion, two hundred twenty-two million, three hundred ninety-five thousand, nine hundred fifty-nine".