508621489 has 2 divisors, whose sum is σ = 508621490. Its totient is φ = 508621488.

The previous prime is 508621457. The next prime is 508621567. The reversal of 508621489 is 984126805.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 345216400 + 163405089 = 18580^2 + 12783^2 .

It is a cyclic number.

It is not a de Polignac number, because 508621489 - 2⁵ = 508621457 is a prime.

It is not a weakly prime, because it can be changed into another prime (508621409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254310744 + 254310745.

It is an arithmetic number, because the mean of its divisors is an integer number (254310745).

Almost surely, 2^508621489 is an apocalyptic number.

It is an amenable number.

508621489 is a deficient number, since it is larger than the sum of its proper divisors (1).

508621489 is an equidigital number, since it uses as much as digits as its factorization.

508621489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 508621489 is about 22552.6381827049. The cubic root of 508621489 is about 798.2364741816.

The spelling of 508621489 in words is "five hundred eight million, six hundred twenty-one thousand, four hundred eighty-nine".