89281606849 has 2 divisors, whose sum is σ = 89281606850. Its totient is φ = 89281606848.

The previous prime is 89281606819. The next prime is 89281606867. The reversal of 89281606849 is 94860618298.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86102338624 + 3179268225 = 293432^2 + 56385^2 .

It is a cyclic number.

It is not a de Polignac number, because 89281606849 - 2⁷ = 89281606721 is a prime.

It is not a weakly prime, because it can be changed into another prime (89281606819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44640803424 + 44640803425.

It is an arithmetic number, because the mean of its divisors is an integer number (44640803425).

Almost surely, 2^89281606849 is an apocalyptic number.

It is an amenable number.

89281606849 is a deficient number, since it is larger than the sum of its proper divisors (1).

89281606849 is an equidigital number, since it uses as much as digits as its factorization.

89281606849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11943936, while the sum is 61.

The spelling of 89281606849 in words is "eighty-nine billion, two hundred eighty-one million, six hundred six thousand, eight hundred forty-nine".