477749 has 4 divisors (see below), whose sum is σ = 479136. Its totient is φ = 476364.

The previous prime is 477739. The next prime is 477767. The reversal of 477749 is 947774.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 947774 = 2 ⋅473887.

It is a cyclic number.

It is not a de Polignac number, because 477749 - 2¹⁶ = 412213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 477749.

It is not an unprimeable number, because it can be changed into a prime (477739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272 + ... + 1014.

It is an arithmetic number, because the mean of its divisors is an integer number (119784).

2⁴⁷⁷⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

477749 is a deficient number, since it is larger than the sum of its proper divisors (1387).

477749 is an equidigital number, since it uses as much as digits as its factorization.

477749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1386.

The product of its digits is 49392, while the sum is 38.

The square root of 477749 is about 691.1938946490. The cubic root of 477749 is about 78.1747670108.

The spelling of 477749 in words is "four hundred seventy-seven thousand, seven hundred forty-nine".