423508489 has 12 divisors (see below), whose sum is σ = 441636300. Its totient is φ = 405636224.

The previous prime is 423508487. The next prime is 423508507. The reversal of 423508489 is 984805324.

It can be written as a sum of positive squares in 6 ways, for example, as 122832889 + 300675600 = 11083^2 + 17340^2 .

It is not a de Polignac number, because 423508489 - 2¹ = 423508487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423508483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1574247 + ... + 1574515.

It is an arithmetic number, because the mean of its divisors is an integer number (36803025).

Almost surely, 2^423508489 is an apocalyptic number.

It is an amenable number.

423508489 is a deficient number, since it is larger than the sum of its proper divisors (18127811).

423508489 is an equidigital number, since it uses as much as digits as its factorization.

423508489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764 (or 531 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The square root of 423508489 is about 20579.3218790124. The cubic root of 423508489 is about 750.9667468135.

The spelling of 423508489 in words is "four hundred twenty-three million, five hundred eight thousand, four hundred eighty-nine".