478809299 has 2 divisors, whose sum is σ = 478809300. Its totient is φ = 478809298.

The previous prime is 478809281. The next prime is 478809311. The reversal of 478809299 is 992908874.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 478809299 - 2¹⁶ = 478743763 is a prime.

It is not a weakly prime, because it can be changed into another prime (478809209) 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, 239404649 + 239404650.

It is an arithmetic number, because the mean of its divisors is an integer number (239404650).

Almost surely, 2^478809299 is an apocalyptic number.

478809299 is a deficient number, since it is larger than the sum of its proper divisors (1).

478809299 is an equidigital number, since it uses as much as digits as its factorization.

478809299 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2612736, while the sum is 56.

The square root of 478809299 is about 21881.7115189832. The cubic root of 478809299 is about 782.3255703776.

The spelling of 478809299 in words is "four hundred seventy-eight million, eight hundred nine thousand, two hundred ninety-nine".