98782889 has 2 divisors, whose sum is σ = 98782890. Its totient is φ = 98782888.

The previous prime is 98782847. The next prime is 98782921. The reversal of 98782889 is 98828789.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97851664 + 931225 = 9892^2 + 965^2 .

It is an emirp because it is prime and its reverse (98828789) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98782889 - 2⁸ = 98782633 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (98782819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49391444 + 49391445.

It is an arithmetic number, because the mean of its divisors is an integer number (49391445).

Almost surely, 2^98782889 is an apocalyptic number.

It is an amenable number.

98782889 is a deficient number, since it is larger than the sum of its proper divisors (1).

98782889 is an equidigital number, since it uses as much as digits as its factorization.

98782889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4644864, while the sum is 59.

The square root of 98782889 is about 9938.9581445944. The cubic root of 98782889 is about 462.2680818261.

The spelling of 98782889 in words is "ninety-eight million, seven hundred eighty-two thousand, eight hundred eighty-nine".