478091 has 4 divisors (see below), whose sum is σ = 506232. Its totient is φ = 449952.

The previous prime is 478087. The next prime is 478099. The reversal of 478091 is 190874.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 478091 - 2² = 478087 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 478091.

It is not an unprimeable number, because it can be changed into a prime (478099) 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 3 ways as a sum of consecutive naturals, for example, 14045 + ... + 14078.

It is an arithmetic number, because the mean of its divisors is an integer number (126558).

2⁴⁷⁸⁰⁹¹ is an apocalyptic number.

478091 is a deficient number, since it is larger than the sum of its proper divisors (28141).

478091 is a wasteful number, since it uses less digits than its factorization.

478091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28140.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 478091 is about 691.4412484080. The cubic root of 478091 is about 78.1934165480.

The spelling of 478091 in words is "four hundred seventy-eight thousand, ninety-one".