1108993 has 2 divisors, whose sum is σ = 1108994. Its totient is φ = 1108992.

The previous prime is 1108967. The next prime is 1108997. The reversal of 1108993 is 3998011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 734449 + 374544 = 857^2 + 612^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1108993 is a prime.

It is not a weakly prime, because it can be changed into another prime (1108997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554496 + 554497.

It is an arithmetic number, because the mean of its divisors is an integer number (554497).

2^1108993 is an apocalyptic number.

It is an amenable number.

1108993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1108993 is an equidigital number, since it uses as much as digits as its factorization.

1108993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 1108993 is about 1053.0873657964. The cubic root of 1108993 is about 103.5085603630.

The spelling of 1108993 in words is "one million, one hundred eight thousand, nine hundred ninety-three".