478945 has 4 divisors (see below), whose sum is σ = 574740. Its totient is φ = 383152.

The previous prime is 478943. The next prime is 478963. The reversal of 478945 is 549874.

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

It can be written as a sum of positive squares in 2 ways, for example, as 166464 + 312481 = 408^2 + 559^2 .

It is a cyclic number.

It is not a de Polignac number, because 478945 - 2¹ = 478943 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (478943) 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, 47890 + ... + 47899.

It is an arithmetic number, because the mean of its divisors is an integer number (143685).

2⁴⁷⁸⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

478945 is a deficient number, since it is larger than the sum of its proper divisors (95795).

478945 is an equidigital number, since it uses as much as digits as its factorization.

478945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95794.

The product of its digits is 40320, while the sum is 37.

The square root of 478945 is about 692.0585235368. The cubic root of 478945 is about 78.2399470595.

The spelling of 478945 in words is "four hundred seventy-eight thousand, nine hundred forty-five".