478229287 has 2 divisors, whose sum is σ = 478229288. Its totient is φ = 478229286.

The previous prime is 478229251. The next prime is 478229293. The reversal of 478229287 is 782922874.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478229287 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 478229287.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478229387) 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, 239114643 + 239114644.

It is an arithmetic number, because the mean of its divisors is an integer number (239114644).

Almost surely, 2^478229287 is an apocalyptic number.

478229287 is a deficient number, since it is larger than the sum of its proper divisors (1).

478229287 is an equidigital number, since it uses as much as digits as its factorization.

478229287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 903168, while the sum is 49.

The square root of 478229287 is about 21868.4541520428. The cubic root of 478229287 is about 782.0095492497.

The spelling of 478229287 in words is "four hundred seventy-eight million, two hundred twenty-nine thousand, two hundred eighty-seven".