842466089 has 2 divisors, whose sum is σ = 842466090. Its totient is φ = 842466088.

The previous prime is 842466077. The next prime is 842466151. The reversal of 842466089 is 980664248.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 440664064 + 401802025 = 20992^2 + 20045^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-842466089 is a prime.

It is a super-2 number, since 2×842466089² = 1419498222229911842, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (842496089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421233044 + 421233045.

It is an arithmetic number, because the mean of its divisors is an integer number (421233045).

Almost surely, 2^842466089 is an apocalyptic number.

It is an amenable number.

842466089 is a deficient number, since it is larger than the sum of its proper divisors (1).

842466089 is an equidigital number, since it uses as much as digits as its factorization.

842466089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 663552, while the sum is 47.

The square root of 842466089 is about 29025.2663898197. The cubic root of 842466089 is about 944.4612473653.

The spelling of 842466089 in words is "eight hundred forty-two million, four hundred sixty-six thousand, eighty-nine".