1115639799 has 16 divisors (see below), whose sum is σ = 1560235008. Its totient is φ = 708257952.

The previous prime is 1115639783. The next prime is 1115639813. The reversal of 1115639799 is 9979365111.

It is a happy number.

It is not a de Polignac number, because 1115639799 - 2⁴ = 1115639783 is a prime.

It is a super-2 number, since 2×1115639799² = 2489304322225520802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115639719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101707 + ... + 112140.

It is an arithmetic number, because the mean of its divisors is an integer number (97514688).

Almost surely, 2^1115639799 is an apocalyptic number.

1115639799 is a deficient number, since it is larger than the sum of its proper divisors (444595209).

1115639799 is a wasteful number, since it uses less digits than its factorization.

1115639799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213934.

The product of its digits is 459270, while the sum is 51.

The square root of 1115639799 is about 33401.1945744460. The cubic root of 1115639799 is about 1037.1494298020.

The spelling of 1115639799 in words is "one billion, one hundred fifteen million, six hundred thirty-nine thousand, seven hundred ninety-nine".