109017973 has 2 divisors, whose sum is σ = 109017974. Its totient is φ = 109017972.

The previous prime is 109017949. The next prime is 109017977. The reversal of 109017973 is 379710901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80694289 + 28323684 = 8983^2 + 5322^2 .

It is an emirp because it is prime and its reverse (379710901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 109017973 - 2⁵ = 109017941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109017977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54508986 + 54508987.

It is an arithmetic number, because the mean of its divisors is an integer number (54508987).

Almost surely, 2^109017973 is an apocalyptic number.

It is an amenable number.

109017973 is a deficient number, since it is larger than the sum of its proper divisors (1).

109017973 is an equidigital number, since it uses as much as digits as its factorization.

109017973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11907, while the sum is 37.

The square root of 109017973 is about 10441.1672240224. The cubic root of 109017973 is about 477.7118718398.

The spelling of 109017973 in words is "one hundred nine million, seventeen thousand, nine hundred seventy-three".