478220899 has 16 divisors (see below), whose sum is σ = 565689600. Its totient is φ = 400013856.

The previous prime is 478220881. The next prime is 478220903. The reversal of 478220899 is 998022874.

It is a cyclic number.

It is not a de Polignac number, because 478220899 - 2²³ = 469832291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (478220839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36409 + ... + 47770.

It is an arithmetic number, because the mean of its divisors is an integer number (35355600).

Almost surely, 2^478220899 is an apocalyptic number.

478220899 is a deficient number, since it is larger than the sum of its proper divisors (87468701).

478220899 is a wasteful number, since it uses less digits than its factorization.

478220899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84234.

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 478220899 is about 21868.2623680987. The cubic root of 478220899 is about 782.0049771510.

The spelling of 478220899 in words is "four hundred seventy-eight million, two hundred twenty thousand, eight hundred ninety-nine".