478917 has 12 divisors (see below), whose sum is σ = 698880. Its totient is φ = 316008.

The previous prime is 478913. The next prime is 478927. The reversal of 478917 is 719874.

It is not a de Polignac number, because 478917 - 2² = 478913 is a prime.

It is a super-2 number, since 2×478917² = 458722985778, which contains 22 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 478917.

It is not an unprimeable number, because it can be changed into a prime (478913) 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 11 ways as a sum of consecutive naturals, for example, 934 + ... + 1352.

It is an arithmetic number, because the mean of its divisors is an integer number (58240).

2⁴⁷⁸⁹¹⁷ is an apocalyptic number.

It is an amenable number.

478917 is a deficient number, since it is larger than the sum of its proper divisors (219963).

478917 is a wasteful number, since it uses less digits than its factorization.

478917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552 (or 549 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 478917 is about 692.0382937381. The cubic root of 478917 is about 78.2384223464.

The spelling of 478917 in words is "four hundred seventy-eight thousand, nine hundred seventeen".