478365787 has 2 divisors, whose sum is σ = 478365788. Its totient is φ = 478365786.

The previous prime is 478365781. The next prime is 478365791. The reversal of 478365787 is 787563874.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 478365787 - 2³ = 478365779 is a prime.

It is not a weakly prime, because it can be changed into another prime (478365781) 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, 239182893 + 239182894.

It is an arithmetic number, because the mean of its divisors is an integer number (239182894).

Almost surely, 2^478365787 is an apocalyptic number.

478365787 is a deficient number, since it is larger than the sum of its proper divisors (1).

478365787 is an equidigital number, since it uses as much as digits as its factorization.

478365787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7902720, while the sum is 55.

The square root of 478365787 is about 21871.5748632786. The cubic root of 478365787 is about 782.0839446301.

The spelling of 478365787 in words is "four hundred seventy-eight million, three hundred sixty-five thousand, seven hundred eighty-seven".