116249989 has 2 divisors, whose sum is σ = 116249990. Its totient is φ = 116249988.

The previous prime is 116249983. The next prime is 116250007. The reversal of 116249989 is 989942611.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84327489 + 31922500 = 9183^2 + 5650^2 .

It is a cyclic number.

It is not a de Polignac number, because 116249989 - 2⁹ = 116249477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116249983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58124994 + 58124995.

It is an arithmetic number, because the mean of its divisors is an integer number (58124995).

Almost surely, 2^116249989 is an apocalyptic number.

It is an amenable number.

116249989 is a deficient number, since it is larger than the sum of its proper divisors (1).

116249989 is an equidigital number, since it uses as much as digits as its factorization.

116249989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 49.

The square root of 116249989 is about 10781.9288163111. The cubic root of 116249989 is about 488.0499884406.

It can be divided in two parts, 11 and 6249989, that added together give a 4-th power (6250000 = 50⁴).

The spelling of 116249989 in words is "one hundred sixteen million, two hundred forty-nine thousand, nine hundred eighty-nine".