989119099 has 2 divisors, whose sum is σ = 989119100. Its totient is φ = 989119098.

The previous prime is 989119097. The next prime is 989119111. The reversal of 989119099 is 990911989.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 989119099 - 2¹ = 989119097 is a prime.

Together with 989119097, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (989119093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494559549 + 494559550.

It is an arithmetic number, because the mean of its divisors is an integer number (494559550).

Almost surely, 2^989119099 is an apocalyptic number.

989119099 is a deficient number, since it is larger than the sum of its proper divisors (1).

989119099 is an equidigital number, since it uses as much as digits as its factorization.

989119099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 472392, while the sum is 55.

The square root of 989119099 is about 31450.2638939644. The cubic root of 989119099 is about 996.3597980083.

The spelling of 989119099 in words is "nine hundred eighty-nine million, one hundred nineteen thousand, ninety-nine".