116291869 has 2 divisors, whose sum is σ = 116291870. Its totient is φ = 116291868.

The previous prime is 116291863. The next prime is 116291893. The reversal of 116291869 is 968192611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113848900 + 2442969 = 10670^2 + 1563^2 .

It is an emirp because it is prime and its reverse (968192611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 116291869 - 2¹¹ = 116289821 is a prime.

It is a super-2 number, since 2×116291869² = 27047597591026322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116291863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58145934 + 58145935.

It is an arithmetic number, because the mean of its divisors is an integer number (58145935).

Almost surely, 2^116291869 is an apocalyptic number.

It is an amenable number.

116291869 is a deficient number, since it is larger than the sum of its proper divisors (1).

116291869 is an equidigital number, since it uses as much as digits as its factorization.

116291869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 43.

The square root of 116291869 is about 10783.8707800122. The cubic root of 116291869 is about 488.1085893909.

The spelling of 116291869 in words is "one hundred sixteen million, two hundred ninety-one thousand, eight hundred sixty-nine".