7894393673 has 4 divisors (see below), whose sum is σ = 7894636308. Its totient is φ = 7894151040.

The previous prime is 7894393651. The next prime is 7894393679. The reversal of 7894393673 is 3763934987.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3763934987 = 601 ⋅6262787.

It can be written as a sum of positive squares in 2 ways, for example, as 4066867984 + 3827525689 = 63772^2 + 61867^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7894393673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7894393679) 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, 63248 + ... + 140673.

It is an arithmetic number, because the mean of its divisors is an integer number (1973659077).

Almost surely, 2^7894393673 is an apocalyptic number.

It is an amenable number.

7894393673 is a deficient number, since it is larger than the sum of its proper divisors (242635).

7894393673 is a wasteful number, since it uses less digits than its factorization.

7894393673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242634.

The product of its digits is 20575296, while the sum is 59.

The square root of 7894393673 is about 88850.4005224512. The cubic root of 7894393673 is about 1991.1604615886.

The spelling of 7894393673 in words is "seven billion, eight hundred ninety-four million, three hundred ninety-three thousand, six hundred seventy-three".