116139691 has 2 divisors, whose sum is σ = 116139692. Its totient is φ = 116139690.

The previous prime is 116139629. The next prime is 116139701. The reversal of 116139691 is 196931611.

It is a strong prime.

It is an emirp because it is prime and its reverse (196931611) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116139691 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 116139691.

It is not a weakly prime, because it can be changed into another prime (116139091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58069845 + 58069846.

It is an arithmetic number, because the mean of its divisors is an integer number (58069846).

Almost surely, 2^116139691 is an apocalyptic number.

116139691 is a deficient number, since it is larger than the sum of its proper divisors (1).

116139691 is an equidigital number, since it uses as much as digits as its factorization.

116139691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8748, while the sum is 37.

The square root of 116139691 is about 10776.8126549551. The cubic root of 116139691 is about 487.8955856402.

The spelling of 116139691 in words is "one hundred sixteen million, one hundred thirty-nine thousand, six hundred ninety-one".