1115039999 has 4 divisors (see below), whose sum is σ = 1118146320. Its totient is φ = 1111933680.

The previous prime is 1115039941. The next prime is 1115040007. The reversal of 1115039999 is 9999305111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9999305111 = 331 ⋅30209381.

It is a cyclic number.

It is not a de Polignac number, because 1115039999 - 2⁸ = 1115039743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115039399) 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 in 3 ways as a sum of consecutive naturals, for example, 1552622 + ... + 1553339.

It is an arithmetic number, because the mean of its divisors is an integer number (279536580).

Almost surely, 2^1115039999 is an apocalyptic number.

1115039999 is a deficient number, since it is larger than the sum of its proper divisors (3106321).

1115039999 is an equidigital number, since it uses as much as digits as its factorization.

1115039999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3106320.

The product of its (nonzero) digits is 98415, while the sum is 47.

The square root of 1115039999 is about 33392.2146465310. The cubic root of 1115039999 is about 1036.9635293752.

The spelling of 1115039999 in words is "one billion, one hundred fifteen million, thirty-nine thousand, nine hundred ninety-nine".