485978 has 4 divisors (see below), whose sum is σ = 728970. Its totient is φ = 242988.

The previous prime is 485977. The next prime is 485993. The reversal of 485978 is 879584.

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

It can be written as a sum of positive squares in only one way, i.e., 485809 + 169 = 697^2 + 13^2 .

It is not an unprimeable number, because it can be changed into a prime (485977) 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, 121493 + ... + 121496.

2⁴⁸⁵⁹⁷⁸ is an apocalyptic number.

485978 is a deficient number, since it is larger than the sum of its proper divisors (242992).

485978 is a wasteful number, since it uses less digits than its factorization.

485978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242991.

The product of its digits is 80640, while the sum is 41.

The square root of 485978 is about 697.1212233177. The cubic root of 485978 is about 78.6210554645.

The spelling of 485978 in words is "four hundred eighty-five thousand, nine hundred seventy-eight".