587898989 has 2 divisors, whose sum is σ = 587898990. Its totient is φ = 587898988.

The previous prime is 587898979. The next prime is 587899001. The reversal of 587898989 is 989898785.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 566202025 + 21696964 = 23795^2 + 4658^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-587898989 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (587898979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 293949494 + 293949495.

It is an arithmetic number, because the mean of its divisors is an integer number (293949495).

Almost surely, 2^587898989 is an apocalyptic number.

It is an amenable number.

587898989 is a deficient number, since it is larger than the sum of its proper divisors (1).

587898989 is an equidigital number, since it uses as much as digits as its factorization.

587898989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 104509440, while the sum is 71.

The square root of 587898989 is about 24246.6284047906. The cubic root of 587898989 is about 837.7238971886.

The spelling of 587898989 in words is "five hundred eighty-seven million, eight hundred ninety-eight thousand, nine hundred eighty-nine".