116091997 has 16 divisors (see below), whose sum is σ = 140849280. Its totient is φ = 93408768.

The previous prime is 116091991. The next prime is 116092003. The reversal of 116091997 is 799190611.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (116091991) and next prime (116092003).

It is a cyclic number.

It is not a de Polignac number, because 116091997 - 2¹¹ = 116089949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116091991) 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 in 15 ways as a sum of consecutive naturals, for example, 54529 + ... + 56617.

It is an arithmetic number, because the mean of its divisors is an integer number (8803080).

Almost surely, 2^116091997 is an apocalyptic number.

116091997 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

116091997 is a deficient number, since it is larger than the sum of its proper divisors (24757283).

116091997 is a wasteful number, since it uses less digits than its factorization.

116091997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2580.

The product of its (nonzero) digits is 30618, while the sum is 43.

The square root of 116091997 is about 10774.5996213316. The cubic root of 116091997 is about 487.8287899912.

The spelling of 116091997 in words is "one hundred sixteen million, ninety-one thousand, nine hundred ninety-seven".