1115023979 has 2 divisors, whose sum is σ = 1115023980. Its totient is φ = 1115023978.

The previous prime is 1115023967. The next prime is 1115023991. The reversal of 1115023979 is 9793205111.

It is a balanced prime because it is at equal distance from previous prime (1115023967) and next prime (1115023991).

It is a cyclic number.

It is not a de Polignac number, because 1115023979 - 2⁴ = 1115023963 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1115023879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557511989 + 557511990.

It is an arithmetic number, because the mean of its divisors is an integer number (557511990).

Almost surely, 2^1115023979 is an apocalyptic number.

1115023979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115023979 is an equidigital number, since it uses as much as digits as its factorization.

1115023979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17010, while the sum is 38.

The square root of 1115023979 is about 33391.9747693963. The cubic root of 1115023979 is about 1036.9585632648.

The spelling of 1115023979 in words is "one billion, one hundred fifteen million, twenty-three thousand, nine hundred seventy-nine".