82093993 has 2 divisors, whose sum is σ = 82093994. Its totient is φ = 82093992.

The previous prime is 82093967. The next prime is 82093997. The reversal of 82093993 is 39939028.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44049769 + 38044224 = 6637^2 + 6168^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82093993 is a prime.

It is not a weakly prime, because it can be changed into another prime (82093997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41046996 + 41046997.

It is an arithmetic number, because the mean of its divisors is an integer number (41046997).

Almost surely, 2^82093993 is an apocalyptic number.

It is an amenable number.

82093993 is a deficient number, since it is larger than the sum of its proper divisors (1).

82093993 is an equidigital number, since it uses as much as digits as its factorization.

82093993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 82093993 is about 9060.5735469671. The cubic root of 82093993 is about 434.6140814723.

The spelling of 82093993 in words is "eighty-two million, ninety-three thousand, nine hundred ninety-three".