442444404 has 24 divisors (see below), whose sum is σ = 1032730048. Its totient is φ = 147430080.

The previous prime is 442444403. The next prime is 442444411. The reversal of 442444404 is 404444244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442444403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47664 + ... + 56184.

Almost surely, 2^442444404 is an apocalyptic number.

It is an amenable number.

442444404 is an abundant number, since it is smaller than the sum of its proper divisors (590285644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442444404 is a wasteful number, since it uses less digits than its factorization.

442444404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12855 (or 12853 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 30.

The square root of 442444404 is about 21034.3624576549. The cubic root of 442444404 is about 761.9963695310.

Adding to 442444404 its reverse (404444244), we get a palindrome (846888648).

It can be divided in two parts, 4424 and 44404, that added together give a triangular number (48828 = T₃₁₂).

The spelling of 442444404 in words is "four hundred forty-two million, four hundred forty-four thousand, four hundred four".