1117589797 has 2 divisors, whose sum is σ = 1117589798. Its totient is φ = 1117589796.

The previous prime is 1117589789. The next prime is 1117589801. The reversal of 1117589797 is 7979857111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1109289636 + 8300161 = 33306^2 + 2881^2 .

It is a cyclic number.

It is not a de Polignac number, because 1117589797 - 2³ = 1117589789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1117589717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 558794898 + 558794899.

It is an arithmetic number, because the mean of its divisors is an integer number (558794899).

Almost surely, 2^1117589797 is an apocalyptic number.

It is an amenable number.

1117589797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1117589797 is an equidigital number, since it uses as much as digits as its factorization.

1117589797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1111320, while the sum is 55.

The square root of 1117589797 is about 33430.3723730383. The cubic root of 1117589797 is about 1037.7533469849.

The spelling of 1117589797 in words is "one billion, one hundred seventeen million, five hundred eighty-nine thousand, seven hundred ninety-seven".