1115879 has 2 divisors, whose sum is σ = 1115880. Its totient is φ = 1115878.

The previous prime is 1115857. The next prime is 1115899. The reversal of 1115879 is 9785111.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1115879 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1115839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557939 + 557940.

It is an arithmetic number, because the mean of its divisors is an integer number (557940).

2^1115879 is an apocalyptic number.

1115879 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115879 is an equidigital number, since it uses as much as digits as its factorization.

1115879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 32.

The square root of 1115879 is about 1056.3517406622. The cubic root of 1115879 is about 103.7223548543.

The spelling of 1115879 in words is "one million, one hundred fifteen thousand, eight hundred seventy-nine".