98644589 has 2 divisors, whose sum is σ = 98644590. Its totient is φ = 98644588.

The previous prime is 98644571. The next prime is 98644639. The reversal of 98644589 is 98544689.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93760489 + 4884100 = 9683^2 + 2210^2 .

It is a cyclic number.

It is not a de Polignac number, because 98644589 - 2²⁰ = 97596013 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 98644589.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98644529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49322294 + 49322295.

It is an arithmetic number, because the mean of its divisors is an integer number (49322295).

Almost surely, 2^98644589 is an apocalyptic number.

It is an amenable number.

98644589 is a deficient number, since it is larger than the sum of its proper divisors (1).

98644589 is an equidigital number, since it uses as much as digits as its factorization.

98644589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2488320, while the sum is 53.

The square root of 98644589 is about 9931.9982380184. The cubic root of 98644589 is about 462.0522497955.

The spelling of 98644589 in words is "ninety-eight million, six hundred forty-four thousand, five hundred eighty-nine".