478887379 has 2 divisors, whose sum is σ = 478887380. Its totient is φ = 478887378.

The previous prime is 478887361. The next prime is 478887389. The reversal of 478887379 is 973788874.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 478887379 - 2¹³ = 478879187 is a prime.

It is not a weakly prime, because it can be changed into another prime (478887389) 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, 239443689 + 239443690.

It is an arithmetic number, because the mean of its divisors is an integer number (239443690).

Almost surely, 2^478887379 is an apocalyptic number.

478887379 is a deficient number, since it is larger than the sum of its proper divisors (1).

478887379 is an equidigital number, since it uses as much as digits as its factorization.

478887379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18966528, while the sum is 61.

The square root of 478887379 is about 21883.4955845724. The cubic root of 478887379 is about 782.3680929856.

The spelling of 478887379 in words is "four hundred seventy-eight million, eight hundred eighty-seven thousand, three hundred seventy-nine".