442477 has 4 divisors (see below), whose sum is σ = 505696. Its totient is φ = 379260.

The previous prime is 442469. The next prime is 442487. The reversal of 442477 is 774244.

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.

It is not a de Polignac number, because 442477 - 2³ = 442469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442447) 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, 31599 + ... + 31612.

It is an arithmetic number, because the mean of its divisors is an integer number (126424).

2⁴⁴²⁴⁷⁷ is an apocalyptic number.

It is an amenable number.

442477 is a deficient number, since it is larger than the sum of its proper divisors (63219).

442477 is an equidigital number, since it uses as much as digits as its factorization.

442477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63218.

The product of its digits is 6272, while the sum is 28.

The square root of 442477 is about 665.1894466992. The cubic root of 442477 is about 76.2015081806.

It can be divided in two parts, 442 and 477, that added together give a palindrome (919).

The spelling of 442477 in words is "four hundred forty-two thousand, four hundred seventy-seven", and thus it is an iban number.