442004441 has 4 divisors (see below), whose sum is σ = 442211892. Its totient is φ = 441796992.

The previous prime is 442004419. The next prime is 442004461. The reversal of 442004441 is 144400244.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 179694025 + 262310416 = 13405^2 + 16196^2 .

It is a cyclic number.

It is not a de Polignac number, because 442004441 - 2²² = 437810137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442004401) 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, 100496 + ... + 104801.

It is an arithmetic number, because the mean of its divisors is an integer number (110552973).

Almost surely, 2^442004441 is an apocalyptic number.

It is an amenable number.

442004441 is a deficient number, since it is larger than the sum of its proper divisors (207451).

442004441 is a wasteful number, since it uses less digits than its factorization.

442004441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207450.

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 442004441 is about 21023.9016597776. The cubic root of 442004441 is about 761.7437115018.

Adding to 442004441 its reverse (144400244), we get a palindrome (586404685).

The spelling of 442004441 in words is "four hundred forty-two million, four thousand, four hundred forty-one".