116239609 has 2 divisors, whose sum is σ = 116239610. Its totient is φ = 116239608.

The previous prime is 116239603. The next prime is 116239661. The reversal of 116239609 is 906932611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105513984 + 10725625 = 10272^2 + 3275^2 .

It is a cyclic number.

It is not a de Polignac number, because 116239609 - 2⁵ = 116239577 is a prime.

It is equal to p_6639508 and since 116239609 and 6639508 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (116239603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58119804 + 58119805.

It is an arithmetic number, because the mean of its divisors is an integer number (58119805).

Almost surely, 2^116239609 is an apocalyptic number.

It is an amenable number.

116239609 is a deficient number, since it is larger than the sum of its proper divisors (1).

116239609 is an equidigital number, since it uses as much as digits as its factorization.

116239609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 116239609 is about 10781.4474445688. The cubic root of 116239609 is about 488.0354619599.

The spelling of 116239609 in words is "one hundred sixteen million, two hundred thirty-nine thousand, six hundred nine".