1117993 has 2 divisors, whose sum is σ = 1117994. Its totient is φ = 1117992.

The previous prime is 1117973. The next prime is 1118003. The reversal of 1117993 is 3997111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 582169 + 535824 = 763^2 + 732^2 .

It is an emirp because it is prime and its reverse (3997111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1117993 - 2⁹ = 1117481 is a prime.

It is not a weakly prime, because it can be changed into another prime (1117913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 558996 + 558997.

It is an arithmetic number, because the mean of its divisors is an integer number (558997).

2^1117993 is an apocalyptic number.

It is an amenable number.

1117993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1117993 is an equidigital number, since it uses as much as digits as its factorization.

1117993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1701, while the sum is 31.

The square root of 1117993 is about 1057.3518808798. The cubic root of 1117993 is about 103.7878131873.

The spelling of 1117993 in words is "one million, one hundred seventeen thousand, nine hundred ninety-three".