116778139 has 4 divisors (see below), whose sum is σ = 116814760. Its totient is φ = 116741520.

The previous prime is 116778121. The next prime is 116778143. The reversal of 116778139 is 931877611.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116778139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 116778095 and 116778104.

It is not an unprimeable number, because it can be changed into a prime (116778149) 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 3 ways as a sum of consecutive naturals, for example, 13017 + ... + 20074.

It is an arithmetic number, because the mean of its divisors is an integer number (29203690).

Almost surely, 2^116778139 is an apocalyptic number.

116778139 is a deficient number, since it is larger than the sum of its proper divisors (36621).

116778139 is an equidigital number, since it uses as much as digits as its factorization.

116778139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36620.

The product of its digits is 63504, while the sum is 43.

The square root of 116778139 is about 10806.3934316681. The cubic root of 116778139 is about 488.7879791175.

The spelling of 116778139 in words is "one hundred sixteen million, seven hundred seventy-eight thousand, one hundred thirty-nine".