477905 has 4 divisors (see below), whose sum is σ = 573492. Its totient is φ = 382320.

The previous prime is 477899. The next prime is 477913. The reversal of 477905 is 509774.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 509774 = 2 ⋅254887.

It can be written as a sum of positive squares in 2 ways, for example, as 369664 + 108241 = 608^2 + 329^2 .

It is not a de Polignac number, because 477905 - 2¹⁴ = 461521 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47786 + ... + 47795.

It is an arithmetic number, because the mean of its divisors is an integer number (143373).

2⁴⁷⁷⁹⁰⁵ is an apocalyptic number.

It is an amenable number.

477905 is a deficient number, since it is larger than the sum of its proper divisors (95587).

477905 is an equidigital number, since it uses as much as digits as its factorization.

477905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95586.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 477905 is about 691.3067336574. The cubic root of 477905 is about 78.1832749208.

The spelling of 477905 in words is "four hundred seventy-seven thousand, nine hundred five".