1117007789 has 2 divisors, whose sum is σ = 1117007790. Its totient is φ = 1117007788.

The previous prime is 1117007747. The next prime is 1117007791. The reversal of 1117007789 is 9877007111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1116228100 + 779689 = 33410^2 + 883^2 .

It is an emirp because it is prime and its reverse (9877007111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1117007789 is a prime.

Together with 1117007791, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1117007189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 558503894 + 558503895.

It is an arithmetic number, because the mean of its divisors is an integer number (558503895).

Almost surely, 2^1117007789 is an apocalyptic number.

It is an amenable number.

1117007789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1117007789 is an equidigital number, since it uses as much as digits as its factorization.

1117007789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24696, while the sum is 41.

The square root of 1117007789 is about 33421.6664605462. Note that the first 3 decimals coincide. The cubic root of 1117007789 is about 1037.5731718655.

The spelling of 1117007789 in words is "one billion, one hundred seventeen million, seven thousand, seven hundred eighty-nine".