478821011 has 2 divisors, whose sum is σ = 478821012. Its totient is φ = 478821010.

The previous prime is 478820989. The next prime is 478821019. The reversal of 478821011 is 110128874.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478821011 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (478821019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239410505 + 239410506.

It is an arithmetic number, because the mean of its divisors is an integer number (239410506).

Almost surely, 2^478821011 is an apocalyptic number.

478821011 is a deficient number, since it is larger than the sum of its proper divisors (1).

478821011 is an equidigital number, since it uses as much as digits as its factorization.

478821011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3584, while the sum is 32.

The square root of 478821011 is about 21881.9791380944. The cubic root of 478821011 is about 782.3319490635.

Adding to 478821011 its reverse (110128874), we get a palindrome (588949885).

The spelling of 478821011 in words is "four hundred seventy-eight million, eight hundred twenty-one thousand, eleven".