116777891 has 2 divisors, whose sum is σ = 116777892. Its totient is φ = 116777890.

The previous prime is 116777887. The next prime is 116777909. The reversal of 116777891 is 198777611.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 116777891 - 2² = 116777887 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (116777191) 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, 58388945 + 58388946.

It is an arithmetic number, because the mean of its divisors is an integer number (58388946).

Almost surely, 2^116777891 is an apocalyptic number.

116777891 is a deficient number, since it is larger than the sum of its proper divisors (1).

116777891 is an equidigital number, since it uses as much as digits as its factorization.

116777891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 148176, while the sum is 47.

The square root of 116777891 is about 10806.3819569734. The cubic root of 116777891 is about 488.7876331067.

The spelling of 116777891 in words is "one hundred sixteen million, seven hundred seventy-seven thousand, eight hundred ninety-one".