478850989 has 2 divisors, whose sum is σ = 478850990. Its totient is φ = 478850988.

The previous prime is 478850963. The next prime is 478851011. The reversal of 478850989 is 989058874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 475458025 + 3392964 = 21805^2 + 1842^2 .

It is a cyclic number.

It is not a de Polignac number, because 478850989 - 2⁷ = 478850861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478850089) 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, 239425494 + 239425495.

It is an arithmetic number, because the mean of its divisors is an integer number (239425495).

Almost surely, 2^478850989 is an apocalyptic number.

It is an amenable number.

478850989 is a deficient number, since it is larger than the sum of its proper divisors (1).

478850989 is an equidigital number, since it uses as much as digits as its factorization.

478850989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5806080, while the sum is 58.

The square root of 478850989 is about 21882.6641202574. The cubic root of 478850989 is about 782.3482754549.

The spelling of 478850989 in words is "four hundred seventy-eight million, eight hundred fifty thousand, nine hundred eighty-nine".