6943746889 has 4 divisors (see below), whose sum is σ = 6943924224. Its totient is φ = 6943569556.

The previous prime is 6943746881. The next prime is 6943746893. The reversal of 6943746889 is 9886473496.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6943746889 - 2³ = 6943746881 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6943746889.

It is not an unprimeable number, because it can be changed into a prime (6943746881) 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, 1117 + ... + 117850.

It is an arithmetic number, because the mean of its divisors is an integer number (1735981056).

Almost surely, 2^6943746889 is an apocalyptic number.

It is an amenable number.

6943746889 is a deficient number, since it is larger than the sum of its proper divisors (177335).

6943746889 is a wasteful number, since it uses less digits than its factorization.

6943746889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177334.

The product of its digits is 62705664, while the sum is 64.

The square root of 6943746889 is about 83329.1478955593. The cubic root of 6943746889 is about 1907.7931886510.

The spelling of 6943746889 in words is "six billion, nine hundred forty-three million, seven hundred forty-six thousand, eight hundred eighty-nine".