116681399 has 2 divisors, whose sum is σ = 116681400. Its totient is φ = 116681398.

The previous prime is 116681309. The next prime is 116681419. The reversal of 116681399 is 993186611.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 116681399 - 2²⁴ = 99904183 is a prime.

It is a super-2 number, since 2×116681399² = 27229097745194402, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116681309) 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, 58340699 + 58340700.

It is an arithmetic number, because the mean of its divisors is an integer number (58340700).

Almost surely, 2^116681399 is an apocalyptic number.

116681399 is a deficient number, since it is larger than the sum of its proper divisors (1).

116681399 is an equidigital number, since it uses as much as digits as its factorization.

116681399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 44.

The square root of 116681399 is about 10801.9164503342. The cubic root of 116681399 is about 488.6529697950.

The spelling of 116681399 in words is "one hundred sixteen million, six hundred eighty-one thousand, three hundred ninety-nine".