89298989498821 has 2 divisors, whose sum is σ = 89298989498822. Its totient is φ = 89298989498820.

The previous prime is 89298989498767. The next prime is 89298989498959. The reversal of 89298989498821 is 12889498989298.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78481632948196 + 10817356550625 = 8858986^2 + 3288975^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89298989498821 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89298989498821.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89298989498221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44649494749410 + 44649494749411.

It is an arithmetic number, because the mean of its divisors is an integer number (44649494749411).

Almost surely, 2^{89298989498821} is an apocalyptic number.

It is an amenable number.

89298989498821 is a deficient number, since it is larger than the sum of its proper divisors (1).

89298989498821 is an equidigital number, since it uses as much as digits as its factorization.

89298989498821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30958682112, while the sum is 94.

The spelling of 89298989498821 in words is "eighty-nine trillion, two hundred ninety-eight billion, nine hundred eighty-nine million, four hundred ninety-eight thousand, eight hundred twenty-one".