98979589 has 2 divisors, whose sum is σ = 98979590. Its totient is φ = 98979588.

The previous prime is 98979583. The next prime is 98979599. The reversal of 98979589 is 98597989.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89151364 + 9828225 = 9442^2 + 3135^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98979589 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 98979589.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98979583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49489794 + 49489795.

It is an arithmetic number, because the mean of its divisors is an integer number (49489795).

Almost surely, 2^98979589 is an apocalyptic number.

It is an amenable number.

98979589 is a deficient number, since it is larger than the sum of its proper divisors (1).

98979589 is an equidigital number, since it uses as much as digits as its factorization.

98979589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14696640, while the sum is 64.

The square root of 98979589 is about 9948.8486268512. The cubic root of 98979589 is about 462.5747066076.

The spelling of 98979589 in words is "ninety-eight million, nine hundred seventy-nine thousand, five hundred eighty-nine".