461998289 has 2 divisors, whose sum is σ = 461998290. Its totient is φ = 461998288.

The previous prime is 461998283. The next prime is 461998343. The reversal of 461998289 is 982899164.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 324288064 + 137710225 = 18008^2 + 11735^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-461998289 is a prime.

It is not a weakly prime, because it can be changed into another prime (461998283) 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, 230999144 + 230999145.

It is an arithmetic number, because the mean of its divisors is an integer number (230999145).

Almost surely, 2^461998289 is an apocalyptic number.

It is an amenable number.

461998289 is a deficient number, since it is larger than the sum of its proper divisors (1).

461998289 is an equidigital number, since it uses as much as digits as its factorization.

461998289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2239488, while the sum is 56.

The square root of 461998289 is about 21494.1454587057. The cubic root of 461998289 is about 773.0604509156.

The spelling of 461998289 in words is "four hundred sixty-one million, nine hundred ninety-eight thousand, two hundred eighty-nine".