969781117 has 2 divisors, whose sum is σ = 969781118. Its totient is φ = 969781116.

The previous prime is 969781067. The next prime is 969781123. The reversal of 969781117 is 711187969.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 854626756 + 115154361 = 29234^2 + 10731^2 .

It is a cyclic number.

It is not a de Polignac number, because 969781117 - 2¹⁹ = 969256829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (969781157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 484890558 + 484890559.

It is an arithmetic number, because the mean of its divisors is an integer number (484890559).

Almost surely, 2^969781117 is an apocalyptic number.

It is an amenable number.

969781117 is a deficient number, since it is larger than the sum of its proper divisors (1).

969781117 is an equidigital number, since it uses as much as digits as its factorization.

969781117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 49.

The square root of 969781117 is about 31141.3088517487. The cubic root of 969781117 is about 989.8238359471.

The spelling of 969781117 in words is "nine hundred sixty-nine million, seven hundred eighty-one thousand, one hundred seventeen".