899027281 has 2 divisors, whose sum is σ = 899027282. Its totient is φ = 899027280.

The previous prime is 899027279. The next prime is 899027317. The reversal of 899027281 is 182720998.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 894967056 + 4060225 = 29916^2 + 2015^2 .

It is a cyclic number.

It is not a de Polignac number, because 899027281 - 2¹ = 899027279 is a prime.

It is a super-4 number, since 4×899027281⁴ (a number of 37 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

Together with 899027279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (899027251) 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, 449513640 + 449513641.

It is an arithmetic number, because the mean of its divisors is an integer number (449513641).

Almost surely, 2^899027281 is an apocalyptic number.

It is an amenable number.

899027281 is a deficient number, since it is larger than the sum of its proper divisors (1).

899027281 is an equidigital number, since it uses as much as digits as its factorization.

899027281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 899027281 is about 29983.7836338245. The cubic root of 899027281 is about 965.1414259330.

The spelling of 899027281 in words is "eight hundred ninety-nine million, twenty-seven thousand, two hundred eighty-one".