478565291 has 2 divisors, whose sum is σ = 478565292. Its totient is φ = 478565290.

The previous prime is 478565287. The next prime is 478565411. The reversal of 478565291 is 192565874.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 478565291 - 2² = 478565287 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (478525291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239282645 + 239282646.

It is an arithmetic number, because the mean of its divisors is an integer number (239282646).

Almost surely, 2^478565291 is an apocalyptic number.

478565291 is a deficient number, since it is larger than the sum of its proper divisors (1).

478565291 is an equidigital number, since it uses as much as digits as its factorization.

478565291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 604800, while the sum is 47.

The square root of 478565291 is about 21876.1351934020. The cubic root of 478565291 is about 782.1926530660.

The spelling of 478565291 in words is "four hundred seventy-eight million, five hundred sixty-five thousand, two hundred ninety-one".