116939909 has 2 divisors, whose sum is σ = 116939910. Its totient is φ = 116939908.

The previous prime is 116939899. The next prime is 116939951. The reversal of 116939909 is 909939611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58951684 + 57988225 = 7678^2 + 7615^2 .

It is a cyclic number.

It is not a de Polignac number, because 116939909 - 2²⁴ = 100162693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116939959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58469954 + 58469955.

It is an arithmetic number, because the mean of its divisors is an integer number (58469955).

Almost surely, 2^116939909 is an apocalyptic number.

It is an amenable number.

116939909 is a deficient number, since it is larger than the sum of its proper divisors (1).

116939909 is an equidigital number, since it uses as much as digits as its factorization.

116939909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 118098, while the sum is 47.

The square root of 116939909 is about 10813.8757621863. The cubic root of 116939909 is about 489.0135771284.

The spelling of 116939909 in words is "one hundred sixteen million, nine hundred thirty-nine thousand, nine hundred nine".