1222879 has 8 divisors (see below), whose sum is σ = 1412768. Its totient is φ = 1036800.

The previous prime is 1222853. The next prime is 1222889. The reversal of 1222879 is 9782221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1222879 - 2⁵ = 1222847 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1222879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222 + ... + 1579.

It is an arithmetic number, because the mean of its divisors is an integer number (176596).

2^1222879 is an apocalyptic number.

1222879 is a deficient number, since it is larger than the sum of its proper divisors (189889).

1222879 is an equidigital number, since it uses as much as digits as its factorization.

1222879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1905.

The product of its digits is 4032, while the sum is 31.

The square root of 1222879 is about 1105.8385958177. The cubic root of 1222879 is about 106.9369588184.

The spelling of 1222879 in words is "one million, two hundred twenty-two thousand, eight hundred seventy-nine".