478522489 has 2 divisors, whose sum is σ = 478522490. Its totient is φ = 478522488.

The previous prime is 478522483. The next prime is 478522501. The reversal of 478522489 is 984225874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 455096889 + 23425600 = 21333^2 + 4840^2 .

It is a cyclic number.

It is not a de Polignac number, because 478522489 - 2⁹ = 478521977 is a prime.

It is not a weakly prime, because it can be changed into another prime (478522483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239261244 + 239261245.

It is an arithmetic number, because the mean of its divisors is an integer number (239261245).

Almost surely, 2^478522489 is an apocalyptic number.

It is an amenable number.

478522489 is a deficient number, since it is larger than the sum of its proper divisors (1).

478522489 is an equidigital number, since it uses as much as digits as its factorization.

478522489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1290240, while the sum is 49.

The square root of 478522489 is about 21875.1568908659. The cubic root of 478522489 is about 782.1693330797.

The spelling of 478522489 in words is "four hundred seventy-eight million, five hundred twenty-two thousand, four hundred eighty-nine".