98610989 has 2 divisors, whose sum is σ = 98610990. Its totient is φ = 98610988.

The previous prime is 98610979. The next prime is 98611001. The reversal of 98610989 is 98901689.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50197225 + 48413764 = 7085^2 + 6958^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98610989 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98610979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49305494 + 49305495.

It is an arithmetic number, because the mean of its divisors is an integer number (49305495).

Almost surely, 2^98610989 is an apocalyptic number.

It is an amenable number.

98610989 is a deficient number, since it is larger than the sum of its proper divisors (1).

98610989 is an equidigital number, since it uses as much as digits as its factorization.

98610989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 50.

The square root of 98610989 is about 9930.3065914402. The cubic root of 98610989 is about 461.9997829250. Note that the first 3 decimals are identical.

It can be divided in two parts, 98610 and 989, that added together give a palindrome (99599).

The spelling of 98610989 in words is "ninety-eight million, six hundred ten thousand, nine hundred eighty-nine".