6854440393 has 12 divisors (see below), whose sum is σ = 7051337748. Its totient is φ = 6659075840.

The previous prime is 6854440391. The next prime is 6854440403. The reversal of 6854440393 is 3930444586.

It can be written as a sum of positive squares in 2 ways, for example, as 3627291529 + 3227148864 = 60227^2 + 56808^2 .

It is not a de Polignac number, because 6854440393 - 2¹ = 6854440391 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6854440391) 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 11 ways as a sum of consecutive naturals, for example, 2834721 + ... + 2837137.

It is an arithmetic number, because the mean of its divisors is an integer number (587611479).

Almost surely, 2^6854440393 is an apocalyptic number.

It is an amenable number.

6854440393 is a deficient number, since it is larger than the sum of its proper divisors (196897355).

6854440393 is an equidigital number, since it uses as much as digits as its factorization.

6854440393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2984 (or 2721 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 46.

The square root of 6854440393 is about 82791.5478355128. The cubic root of 6854440393 is about 1899.5788903301.

The spelling of 6854440393 in words is "six billion, eight hundred fifty-four million, four hundred forty thousand, three hundred ninety-three".