404477 has 4 divisors (see below), whose sum is σ = 405756. Its totient is φ = 403200.

The previous prime is 404461. The next prime is 404483. The reversal of 404477 is 774404.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 383161 + 21316 = 619^2 + 146^2 .

It is a cyclic number.

It is not a de Polignac number, because 404477 - 2⁴ = 404461 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 404477.

It is not an unprimeable number, because it can be changed into a prime (404497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227 + ... + 927.

It is an arithmetic number, because the mean of its divisors is an integer number (101439).

2⁴⁰⁴⁴⁷⁷ is an apocalyptic number.

It is an amenable number.

404477 is a deficient number, since it is larger than the sum of its proper divisors (1279).

404477 is an equidigital number, since it uses as much as digits as its factorization.

404477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278.

The product of its (nonzero) digits is 3136, while the sum is 26.

The square root of 404477 is about 635.9850627177. The cubic root of 404477 is about 73.9545008836.

The spelling of 404477 in words is "four hundred four thousand, four hundred seventy-seven", and thus it is an iban number.