478550477 has 2 divisors, whose sum is σ = 478550478. Its totient is φ = 478550476.

The previous prime is 478550461. The next prime is 478550497. The reversal of 478550477 is 774055874.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 473758756 + 4791721 = 21766^2 + 2189^2 .

It is a cyclic number.

It is not a de Polignac number, because 478550477 - 2⁴ = 478550461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478550497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239275238 + 239275239.

It is an arithmetic number, because the mean of its divisors is an integer number (239275239).

Almost surely, 2^478550477 is an apocalyptic number.

It is an amenable number.

478550477 is a deficient number, since it is larger than the sum of its proper divisors (1).

478550477 is an equidigital number, since it uses as much as digits as its factorization.

478550477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1097600, while the sum is 47.

The square root of 478550477 is about 21875.7966026383. The cubic root of 478550477 is about 782.1845820520.

The spelling of 478550477 in words is "four hundred seventy-eight million, five hundred fifty thousand, four hundred seventy-seven".