459809891 has 2 divisors, whose sum is σ = 459809892. Its totient is φ = 459809890.

The previous prime is 459809843. The next prime is 459809929. The reversal of 459809891 is 198908954.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 459809891 - 2⁶ = 459809827 is a prime.

It is a super-2 number, since 2×459809891² = 422850271722863762, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (459802891) 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, 229904945 + 229904946.

It is an arithmetic number, because the mean of its divisors is an integer number (229904946).

Almost surely, 2^459809891 is an apocalyptic number.

459809891 is a deficient number, since it is larger than the sum of its proper divisors (1).

459809891 is an equidigital number, since it uses as much as digits as its factorization.

459809891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 933120, while the sum is 53.

The square root of 459809891 is about 21443.1781926094. The cubic root of 459809891 is about 771.8379051294.

The spelling of 459809891 in words is "four hundred fifty-nine million, eight hundred nine thousand, eight hundred ninety-one".