899880017 has 2 divisors, whose sum is σ = 899880018. Its totient is φ = 899880016.

The previous prime is 899879999. The next prime is 899880139. The reversal of 899880017 is 710088998.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 579076096 + 320803921 = 24064^2 + 17911^2 .

It is a cyclic number.

It is not a de Polignac number, because 899880017 - 2¹⁴ = 899863633 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (899880517) 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, 449940008 + 449940009.

It is an arithmetic number, because the mean of its divisors is an integer number (449940009).

Almost surely, 2^899880017 is an apocalyptic number.

It is an amenable number.

899880017 is a deficient number, since it is larger than the sum of its proper divisors (1).

899880017 is an equidigital number, since it uses as much as digits as its factorization.

899880017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 50.

The square root of 899880017 is about 29998.0002166811. Note that the first 3 decimals coincide. The cubic root of 899880017 is about 965.4464781386.

The spelling of 899880017 in words is "eight hundred ninety-nine million, eight hundred eighty thousand, seventeen".