6889308993 has 24 divisors (see below), whose sum is σ = 11445282368. Its totient is φ = 3911667552.

The previous prime is 6889308983. The next prime is 6889309043. The reversal of 6889308993 is 3998039886.

It is not a de Polignac number, because 6889308993 - 2⁸ = 6889308737 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6889308993.

It is not an unprimeable number, because it can be changed into a prime (6889308983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 338371 + ... + 358152.

Almost surely, 2^6889308993 is an apocalyptic number.

6889308993 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

6889308993 is a deficient number, since it is larger than the sum of its proper divisors (4555973375).

6889308993 is a wasteful number, since it uses less digits than its factorization.

6889308993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696693 (or 696690 counting only the distinct ones).

The product of its (nonzero) digits is 20155392, while the sum is 63.

The square root of 6889308993 is about 83001.8613827425. The cubic root of 6889308993 is about 1902.7945021695.

The spelling of 6889308993 in words is "six billion, eight hundred eighty-nine million, three hundred eight thousand, nine hundred ninety-three".