1116644999 has 8 divisors (see below), whose sum is σ = 1124232480. Its totient is φ = 1109068576.

The previous prime is 1116644989. The next prime is 1116645001. The reversal of 1116644999 is 9994466111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1116644999 - 2⁸ = 1116644743 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1116644909) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327797 + ... + 331185.

It is an arithmetic number, because the mean of its divisors is an integer number (140529060).

Almost surely, 2^1116644999 is an apocalyptic number.

1116644999 is a deficient number, since it is larger than the sum of its proper divisors (7587481).

1116644999 is a wasteful number, since it uses less digits than its factorization.

1116644999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5529.

The product of its digits is 419904, while the sum is 50.

The square root of 1116644999 is about 33416.2385525361. The cubic root of 1116644999 is about 1037.4608294884.

It can be divided in two parts, 11166 and 44999, that added together give a palindrome (56165).

The spelling of 1116644999 in words is "one billion, one hundred sixteen million, six hundred forty-four thousand, nine hundred ninety-nine".