478034489 has 2 divisors, whose sum is σ = 478034490. Its totient is φ = 478034488.

The previous prime is 478034467. The next prime is 478034519. The reversal of 478034489 is 984430874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 470239225 + 7795264 = 21685^2 + 2792^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478034489 is a prime.

It is a super-2 number, since 2×478034489² = 457033945346982242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (478034989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239017244 + 239017245.

It is an arithmetic number, because the mean of its divisors is an integer number (239017245).

Almost surely, 2^478034489 is an apocalyptic number.

It is an amenable number.

478034489 is a deficient number, since it is larger than the sum of its proper divisors (1).

478034489 is an equidigital number, since it uses as much as digits as its factorization.

478034489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 774144, while the sum is 47.

The square root of 478034489 is about 21863.9998399195. Note that the first 3 decimals coincide. The cubic root of 478034489 is about 781.9033557086.

The spelling of 478034489 in words is "four hundred seventy-eight million, thirty-four thousand, four hundred eighty-nine".