478393247 has 2 divisors, whose sum is σ = 478393248. Its totient is φ = 478393246.

The previous prime is 478393241. The next prime is 478393283. The reversal of 478393247 is 742393874.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 478393247 - 2¹⁴ = 478376863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478393241) 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, 239196623 + 239196624.

It is an arithmetic number, because the mean of its divisors is an integer number (239196624).

Almost surely, 2^478393247 is an apocalyptic number.

478393247 is a deficient number, since it is larger than the sum of its proper divisors (1).

478393247 is an equidigital number, since it uses as much as digits as its factorization.

478393247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 47.

The square root of 478393247 is about 21872.2026097053. The cubic root of 478393247 is about 782.0989091996.

The spelling of 478393247 in words is "four hundred seventy-eight million, three hundred ninety-three thousand, two hundred forty-seven".