1123879 has 2 divisors, whose sum is σ = 1123880. Its totient is φ = 1123878.

The previous prime is 1123873. The next prime is 1123883. The reversal of 1123879 is 9783211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1123879 - 2¹¹ = 1121831 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1123879.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561939 + 561940.

It is an arithmetic number, because the mean of its divisors is an integer number (561940).

2^1123879 is an apocalyptic number.

1123879 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123879 is an equidigital number, since it uses as much as digits as its factorization.

1123879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 31.

The square root of 1123879 is about 1060.1315956050. The cubic root of 1123879 is about 103.9696348728.

It can be divided in two parts, 1123 and 879, that added together give a palindrome (2002).

The spelling of 1123879 in words is "one million, one hundred twenty-three thousand, eight hundred seventy-nine".