477979 has 4 divisors (see below), whose sum is σ = 479520. Its totient is φ = 476440.

The previous prime is 477977. The next prime is 477991. The reversal of 477979 is 979774.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 979774 = 2 ⋅489887.

It is a cyclic number.

It is not a de Polignac number, because 477979 - 2¹ = 477977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (477973) 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, 124 + ... + 985.

It is an arithmetic number, because the mean of its divisors is an integer number (119880).

2⁴⁷⁷⁹⁷⁹ is an apocalyptic number.

477979 is a deficient number, since it is larger than the sum of its proper divisors (1541).

477979 is a wasteful number, since it uses less digits than its factorization.

477979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540.

The product of its digits is 111132, while the sum is 43.

The square root of 477979 is about 691.3602534135. The cubic root of 477979 is about 78.1873100769.

The spelling of 477979 in words is "four hundred seventy-seven thousand, nine hundred seventy-nine".