478888990 has 8 divisors (see below), whose sum is σ = 862000200. Its totient is φ = 191555592.

The previous prime is 478888987. The next prime is 478889009. The reversal of 478888990 is 99888874.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 23944440 + ... + 23944459.

It is an arithmetic number, because the mean of its divisors is an integer number (107750025).

Almost surely, 2^478888990 is an apocalyptic number.

478888990 is a deficient number, since it is larger than the sum of its proper divisors (383111210).

478888990 is a wasteful number, since it uses less digits than its factorization.

478888990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47888906.

The product of its (nonzero) digits is 9289728, while the sum is 61.

The square root of 478888990 is about 21883.5323931033. The cubic root of 478888990 is about 782.3689702925.

The spelling of 478888990 in words is "four hundred seventy-eight million, eight hundred eighty-eight thousand, nine hundred ninety".