1222892279 has 4 divisors (see below), whose sum is σ = 1397591184. Its totient is φ = 1048193376.

The previous prime is 1222892273. The next prime is 1222892287. The reversal of 1222892279 is 9722982221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222892279 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 (1222892273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87349442 + ... + 87349455.

It is an arithmetic number, because the mean of its divisors is an integer number (349397796).

Almost surely, 2^1222892279 is an apocalyptic number.

1222892279 is a deficient number, since it is larger than the sum of its proper divisors (174698905).

1222892279 is an equidigital number, since it uses as much as digits as its factorization.

1222892279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174698904.

The product of its digits is 145152, while the sum is 44.

The square root of 1222892279 is about 34969.8767369861. The cubic root of 1222892279 is about 1069.3734588605.

The spelling of 1222892279 in words is "one billion, two hundred twenty-two million, eight hundred ninety-two thousand, two hundred seventy-nine".