116778889 has 8 divisors (see below), whose sum is σ = 122046912. Its totient is φ = 111526800.

The previous prime is 116778887. The next prime is 116778929. The reversal of 116778889 is 988877611.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 116778889 - 2¹ = 116778887 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (116778881) 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 7 ways as a sum of consecutive naturals, for example, 12502 + ... + 19744.

It is an arithmetic number, because the mean of its divisors is an integer number (15255864).

Almost surely, 2^116778889 is an apocalyptic number.

It is an amenable number.

116778889 is a deficient number, since it is larger than the sum of its proper divisors (5268023).

116778889 is an equidigital number, since it uses as much as digits as its factorization.

116778889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7967.

The product of its digits is 1354752, while the sum is 55.

The square root of 116778889 is about 10806.4281332918. The cubic root of 116778889 is about 488.7890255183.

The spelling of 116778889 in words is "one hundred sixteen million, seven hundred seventy-eight thousand, eight hundred eighty-nine".