477988 has 24 divisors (see below), whose sum is σ = 980672. Its totient is φ = 199584.

The previous prime is 477977. The next prime is 477991. The reversal of 477988 is 889774.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1006 + ... + 1402.

2⁴⁷⁷⁹⁸⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 477988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (490336).

477988 is an abundant number, since it is smaller than the sum of its proper divisors (502684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

477988 is a wasteful number, since it uses less digits than its factorization.

477988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451 (or 449 counting only the distinct ones).

The product of its digits is 112896, while the sum is 43.

The square root of 477988 is about 691.3667622905. The cubic root of 477988 is about 78.1878008107.

The spelling of 477988 in words is "four hundred seventy-seven thousand, nine hundred eighty-eight".