1113309979 has 2 divisors, whose sum is σ = 1113309980. Its totient is φ = 1113309978.

The previous prime is 1113309961. The next prime is 1113310021. The reversal of 1113309979 is 9799033111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1113309979 - 2¹¹ = 1113307931 is a prime.

It is not a weakly prime, because it can be changed into another prime (1113309179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556654989 + 556654990.

It is an arithmetic number, because the mean of its divisors is an integer number (556654990).

Almost surely, 2^1113309979 is an apocalyptic number.

1113309979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113309979 is an equidigital number, since it uses as much as digits as its factorization.

1113309979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45927, while the sum is 43.

The square root of 1113309979 is about 33366.3000496009. The cubic root of 1113309979 is about 1036.4269578183.

The spelling of 1113309979 in words is "one billion, one hundred thirteen million, three hundred nine thousand, nine hundred seventy-nine".