109109993 has 2 divisors, whose sum is σ = 109109994. Its totient is φ = 109109992.

The previous prime is 109109911. The next prime is 109110013. The reversal of 109109993 is 399901901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83028544 + 26081449 = 9112^2 + 5107^2 .

It is a cyclic number.

It is not a de Polignac number, because 109109993 - 2²⁴ = 92332777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 109109993.

It is not a weakly prime, because it can be changed into another prime (109100993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54554996 + 54554997.

It is an arithmetic number, because the mean of its divisors is an integer number (54554997).

Almost surely, 2^109109993 is an apocalyptic number.

It is an amenable number.

109109993 is a deficient number, since it is larger than the sum of its proper divisors (1).

109109993 is an equidigital number, since it uses as much as digits as its factorization.

109109993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19683, while the sum is 41.

The square root of 109109993 is about 10445.5728899855. The cubic root of 109109993 is about 477.8462432121.

The spelling of 109109993 in words is "one hundred nine million, one hundred nine thousand, nine hundred ninety-three".