478253977 has 2 divisors, whose sum is σ = 478253978. Its totient is φ = 478253976.

The previous prime is 478253929. The next prime is 478253981. The reversal of 478253977 is 779352874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 329023321 + 149230656 = 18139^2 + 12216^2 .

It is a cyclic number.

It is not a de Polignac number, because 478253977 - 2¹¹ = 478251929 is a prime.

It is not a weakly prime, because it can be changed into another prime (478253777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239126988 + 239126989.

It is an arithmetic number, because the mean of its divisors is an integer number (239126989).

Almost surely, 2^478253977 is an apocalyptic number.

It is an amenable number.

478253977 is a deficient number, since it is larger than the sum of its proper divisors (1).

478253977 is an equidigital number, since it uses as much as digits as its factorization.

478253977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2963520, while the sum is 52.

The square root of 478253977 is about 21869.0186565378. The cubic root of 478253977 is about 782.0230068693.

The spelling of 478253977 in words is "four hundred seventy-eight million, two hundred fifty-three thousand, nine hundred seventy-seven".