478366379 has 2 divisors, whose sum is σ = 478366380. Its totient is φ = 478366378.

The previous prime is 478366337. The next prime is 478366391. The reversal of 478366379 is 973663874.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478366379 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 478366379.

It is not a weakly prime, because it can be changed into another prime (478366319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239183189 + 239183190.

It is an arithmetic number, because the mean of its divisors is an integer number (239183190).

Almost surely, 2^478366379 is an apocalyptic number.

478366379 is a deficient number, since it is larger than the sum of its proper divisors (1).

478366379 is an equidigital number, since it uses as much as digits as its factorization.

478366379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4572288, while the sum is 53.

The square root of 478366379 is about 21871.5883968220. The cubic root of 478366379 is about 782.0842672517.

The spelling of 478366379 in words is "four hundred seventy-eight million, three hundred sixty-six thousand, three hundred seventy-nine".