117769997 has 2 divisors, whose sum is σ = 117769998. Its totient is φ = 117769996.

The previous prime is 117769979. The next prime is 117770011. The reversal of 117769997 is 799967711.

Together with previous prime (117769979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92659876 + 25110121 = 9626^2 + 5011^2 .

It is a cyclic number.

It is not a de Polignac number, because 117769997 - 2⁸ = 117769741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117769907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58884998 + 58884999.

It is an arithmetic number, because the mean of its divisors is an integer number (58884999).

Almost surely, 2^117769997 is an apocalyptic number.

It is an amenable number.

117769997 is a deficient number, since it is larger than the sum of its proper divisors (1).

117769997 is an equidigital number, since it uses as much as digits as its factorization.

117769997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1500282, while the sum is 56.

The square root of 117769997 is about 10852.1885811112. The cubic root of 117769997 is about 490.1679238423.

The spelling of 117769997 in words is "one hundred seventeen million, seven hundred sixty-nine thousand, nine hundred ninety-seven".