7999991093 has 2 divisors, whose sum is σ = 7999991094. Its totient is φ = 7999991092.

The previous prime is 7999991081. The next prime is 7999991113. The reversal of 7999991093 is 3901999997.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4350985444 + 3649005649 = 65962^2 + 60407^2 .

It is a cyclic number.

It is not a de Polignac number, because 7999991093 - 2¹⁴ = 7999974709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7999991003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3999995546 + 3999995547.

It is an arithmetic number, because the mean of its divisors is an integer number (3999995547).

Almost surely, 2^7999991093 is an apocalyptic number.

It is an amenable number.

7999991093 is a deficient number, since it is larger than the sum of its proper divisors (1).

7999991093 is an equidigital number, since it uses as much as digits as its factorization.

7999991093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11160261, while the sum is 65.

The square root of 7999991093 is about 89442.6693083340. The cubic root of 7999991093 is about 1999.9992577497. Note that the first 3 decimals are identical.

The spelling of 7999991093 in words is "seven billion, nine hundred ninety-nine million, nine hundred ninety-one thousand, ninety-three".