479978 has 16 divisors (see below), whose sum is σ = 803520. Its totient is φ = 213696.

The previous prime is 479971. The next prime is 480013. The reversal of 479978 is 879974.

It is not an unprimeable number, because it can be changed into a prime (479971) by changing a digit.

479978 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 7 ways as a sum of consecutive naturals, for example, 275 + ... + 1017.

It is an arithmetic number, because the mean of its divisors is an integer number (50220).

2⁴⁷⁹⁹⁷⁸ is an apocalyptic number.

479978 is a deficient number, since it is larger than the sum of its proper divisors (323542).

479978 is a wasteful number, since it uses less digits than its factorization.

479978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781.

The product of its digits is 127008, while the sum is 44.

The square root of 479978 is about 692.8044457132. The cubic root of 479978 is about 78.2961565955.

The spelling of 479978 in words is "four hundred seventy-nine thousand, nine hundred seventy-eight".