459855989 has 2 divisors, whose sum is σ = 459855990. Its totient is φ = 459855988.

The previous prime is 459855937. The next prime is 459856009. The reversal of 459855989 is 989558954.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 456676900 + 3179089 = 21370^2 + 1783^2 .

It is a cyclic number.

It is not a de Polignac number, because 459855989 - 2²⁴ = 443078773 is a prime.

It is a super-2 number, since 2×459855989² = 422935061238336242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (459855289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 229927994 + 229927995.

It is an arithmetic number, because the mean of its divisors is an integer number (229927995).

Almost surely, 2^459855989 is an apocalyptic number.

It is an amenable number.

459855989 is a deficient number, since it is larger than the sum of its proper divisors (1).

459855989 is an equidigital number, since it uses as much as digits as its factorization.

459855989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328000, while the sum is 62.

The square root of 459855989 is about 21444.2530529744. The cubic root of 459855989 is about 771.8636976692.

The spelling of 459855989 in words is "four hundred fifty-nine million, eight hundred fifty-five thousand, nine hundred eighty-nine".