989484919 has 2 divisors, whose sum is σ = 989484920. Its totient is φ = 989484918.

The previous prime is 989484917. The next prime is 989484943. The reversal of 989484919 is 919484989.

It is a weak prime.

It is an emirp because it is prime and its reverse (919484989) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 989484919 - 2¹ = 989484917 is a prime.

It is a super-2 number, since 2×989484919² = 1958160809856873122, which contains 22 as substring.

Together with 989484917, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (989484913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494742459 + 494742460.

It is an arithmetic number, because the mean of its divisors is an integer number (494742460).

Almost surely, 2^989484919 is an apocalyptic number.

989484919 is a deficient number, since it is larger than the sum of its proper divisors (1).

989484919 is an equidigital number, since it uses as much as digits as its factorization.

989484919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6718464, while the sum is 61.

The square root of 989484919 is about 31456.0792057752. The cubic root of 989484919 is about 996.4826155121.

The spelling of 989484919 in words is "nine hundred eighty-nine million, four hundred eighty-four thousand, nine hundred nineteen".