8109973 has 2 divisors, whose sum is σ = 8109974. Its totient is φ = 8109972.

The previous prime is 8109971. The next prime is 8110009. The reversal of 8109973 is 3799018.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4334724 + 3775249 = 2082^2 + 1943^2 .

It is a cyclic number.

It is not a de Polignac number, because 8109973 - 2¹ = 8109971 is a prime.

Together with 8109971, it forms a pair of twin primes.

8109973 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8109971) 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 as a sum of consecutive naturals, namely, 4054986 + 4054987.

It is an arithmetic number, because the mean of its divisors is an integer number (4054987).

Almost surely, 2^8109973 is an apocalyptic number.

It is an amenable number.

8109973 is a deficient number, since it is larger than the sum of its proper divisors (1).

8109973 is an equidigital number, since it uses as much as digits as its factorization.

8109973 is an odious number, because the sum of its binary digits is odd.

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

The square root of 8109973 is about 2847.8014326845. The cubic root of 8109973 is about 200.9122741194.

The spelling of 8109973 in words is "eight million, one hundred nine thousand, nine hundred seventy-three".