442807936 has 16 divisors (see below), whose sum is σ = 882156690. Its totient is φ = 221403904.

The previous prime is 442807933. The next prime is 442807969. The reversal of 442807936 is 639708244.

It can be written as a sum of positive squares in only one way, i.e., 381967936 + 60840000 = 19544^2 + 7800^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 442807892 and 442807901.

It is not an unprimeable number, because it can be changed into a prime (442807933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1729591 + ... + 1729846.

Almost surely, 2^442807936 is an apocalyptic number.

It is an amenable number.

442807936 is a deficient number, since it is larger than the sum of its proper divisors (439348754).

442807936 is an equidigital number, since it uses as much as digits as its factorization.

442807936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3459451 (or 3459439 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 442807936 is about 21043.0020671956. The cubic root of 442807936 is about 762.2050091012.

The spelling of 442807936 in words is "four hundred forty-two million, eight hundred seven thousand, nine hundred thirty-six".