478547669 has 2 divisors, whose sum is σ = 478547670. Its totient is φ = 478547668.

The previous prime is 478547599. The next prime is 478547681. The reversal of 478547669 is 966745874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 477947044 + 600625 = 21862^2 + 775^2 .

It is a cyclic number.

It is not a de Polignac number, because 478547669 - 2⁸ = 478547413 is a prime.

It is a super-2 number, since 2×478547669² = 458015743010667122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478543669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239273834 + 239273835.

It is an arithmetic number, because the mean of its divisors is an integer number (239273835).

Almost surely, 2^478547669 is an apocalyptic number.

It is an amenable number.

478547669 is a deficient number, since it is larger than the sum of its proper divisors (1).

478547669 is an equidigital number, since it uses as much as digits as its factorization.

478547669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10160640, while the sum is 56.

The square root of 478547669 is about 21875.7324220242. The cubic root of 478547669 is about 782.1830521690.

The spelling of 478547669 in words is "four hundred seventy-eight million, five hundred forty-seven thousand, six hundred sixty-nine".