989695099 has 2 divisors, whose sum is σ = 989695100. Its totient is φ = 989695098.

The previous prime is 989695097. The next prime is 989695111. The reversal of 989695099 is 990596989.

It is a weak prime.

It is an emirp because it is prime and its reverse (990596989) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 989695099 - 2¹ = 989695097 is a prime.

Together with 989695097, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 989695099.

It is not a weakly prime, because it can be changed into another prime (989695097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494847549 + 494847550.

It is an arithmetic number, because the mean of its divisors is an integer number (494847550).

Almost surely, 2^989695099 is an apocalyptic number.

989695099 is a deficient number, since it is larger than the sum of its proper divisors (1).

989695099 is an equidigital number, since it uses as much as digits as its factorization.

989695099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14171760, while the sum is 64.

The square root of 989695099 is about 31459.4198770416. The cubic root of 989695099 is about 996.5531659855.

The spelling of 989695099 in words is "nine hundred eighty-nine million, six hundred ninety-five thousand, ninety-nine".