116438809 has 2 divisors, whose sum is σ = 116438810. Its totient is φ = 116438808.

The previous prime is 116438767. The next prime is 116438837. The reversal of 116438809 is 908834611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113209600 + 3229209 = 10640^2 + 1797^2 .

It is a cyclic number.

It is not a de Polignac number, because 116438809 - 2²⁵ = 82884377 is a prime.

It is not a weakly prime, because it can be changed into another prime (116438879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58219404 + 58219405.

It is an arithmetic number, because the mean of its divisors is an integer number (58219405).

Almost surely, 2^116438809 is an apocalyptic number.

It is an amenable number.

116438809 is a deficient number, since it is larger than the sum of its proper divisors (1).

116438809 is an equidigital number, since it uses as much as digits as its factorization.

116438809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 116438809 is about 10790.6815818094. The cubic root of 116438809 is about 488.3140852399.

The spelling of 116438809 in words is "one hundred sixteen million, four hundred thirty-eight thousand, eight hundred nine".