478878443 has 2 divisors, whose sum is σ = 478878444. Its totient is φ = 478878442.

The previous prime is 478878353. The next prime is 478878461. The reversal of 478878443 is 344878874.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478878443 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (478878643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239439221 + 239439222.

It is an arithmetic number, because the mean of its divisors is an integer number (239439222).

Almost surely, 2^478878443 is an apocalyptic number.

478878443 is a deficient number, since it is larger than the sum of its proper divisors (1).

478878443 is an equidigital number, since it uses as much as digits as its factorization.

478878443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4816896, while the sum is 53.

The square root of 478878443 is about 21883.2914114856. The cubic root of 478878443 is about 782.3632266468.

The spelling of 478878443 in words is "four hundred seventy-eight million, eight hundred seventy-eight thousand, four hundred forty-three".