478560491 has 4 divisors (see below), whose sum is σ = 478758984. Its totient is φ = 478362000.

The previous prime is 478560473. The next prime is 478560497. The reversal of 478560491 is 194065874.

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 478560491 - 2⁶ = 478560427 is a prime.

It is a super-2 number, since 2×478560491² = 458040287092322162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478560497) by changing a digit.

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, 95585 + ... + 100466.

It is an arithmetic number, because the mean of its divisors is an integer number (119689746).

Almost surely, 2^478560491 is an apocalyptic number.

478560491 is a deficient number, since it is larger than the sum of its proper divisors (198493).

478560491 is a wasteful number, since it uses less digits than its factorization.

478560491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198492.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 478560491 is about 21876.0254845344. The cubic root of 478560491 is about 782.1900379319.

The spelling of 478560491 in words is "four hundred seventy-eight million, five hundred sixty thousand, four hundred ninety-one".