478861 has 2 divisors, whose sum is σ = 478862. Its totient is φ = 478860.

The previous prime is 478853. The next prime is 478871. The reversal of 478861 is 168874.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 352836 + 126025 = 594^2 + 355^2 .

It is a cyclic number.

It is not a de Polignac number, because 478861 - 2³ = 478853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478801) 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 as a sum of consecutive naturals, namely, 239430 + 239431.

It is an arithmetic number, because the mean of its divisors is an integer number (239431).

2⁴⁷⁸⁸⁶¹ is an apocalyptic number.

It is an amenable number.

478861 is a deficient number, since it is larger than the sum of its proper divisors (1).

478861 is an equidigital number, since it uses as much as digits as its factorization.

478861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10752, while the sum is 34.

The square root of 478861 is about 691.9978323665. The cubic root of 478861 is about 78.2353727418.

The spelling of 478861 in words is "four hundred seventy-eight thousand, eight hundred sixty-one".