493328489 has 2 divisors, whose sum is σ = 493328490. Its totient is φ = 493328488.

The previous prime is 493328471. The next prime is 493328509. The reversal of 493328489 is 984823394.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 493195264 + 133225 = 22208^2 + 365^2 .

It is a cyclic number.

It is not a de Polignac number, because 493328489 - 2¹⁶ = 493262953 is a prime.

It is not a weakly prime, because it can be changed into another prime (493328089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246664244 + 246664245.

It is an arithmetic number, because the mean of its divisors is an integer number (246664245).

Almost surely, 2^493328489 is an apocalyptic number.

It is an amenable number.

493328489 is a deficient number, since it is larger than the sum of its proper divisors (1).

493328489 is an equidigital number, since it uses as much as digits as its factorization.

493328489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1492992, while the sum is 50.

The square root of 493328489 is about 22210.9992796362. Note that the first 3 decimals coincide. The cubic root of 493328489 is about 790.1545865302.

The spelling of 493328489 in words is "four hundred ninety-three million, three hundred twenty-eight thousand, four hundred eighty-nine".