8091973 has 2 divisors, whose sum is σ = 8091974. Its totient is φ = 8091972.

The previous prime is 8091959. The next prime is 8091991. The reversal of 8091973 is 3791908.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7828804 + 263169 = 2798^2 + 513^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8091973 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8091913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4045986 + 4045987.

It is an arithmetic number, because the mean of its divisors is an integer number (4045987).

Almost surely, 2^8091973 is an apocalyptic number.

It is an amenable number.

8091973 is a deficient number, since it is larger than the sum of its proper divisors (1).

8091973 is an equidigital number, since it uses as much as digits as its factorization.

8091973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 8091973 is about 2844.6393444512. The cubic root of 8091973 is about 200.7635231197.

The spelling of 8091973 in words is "eight million, ninety-one thousand, nine hundred seventy-three".