442322441 has 4 divisors (see below), whose sum is σ = 482533584. Its totient is φ = 402111300.

The previous prime is 442322429. The next prime is 442322449. The reversal of 442322441 is 144223244.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 442322441 - 2¹⁰ = 442321417 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 442322441.

It is not an unprimeable number, because it can be changed into a prime (442322449) 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, 20105555 + ... + 20105576.

It is an arithmetic number, because the mean of its divisors is an integer number (120633396).

Almost surely, 2^442322441 is an apocalyptic number.

It is an amenable number.

442322441 is a deficient number, since it is larger than the sum of its proper divisors (40211143).

442322441 is a wasteful number, since it uses less digits than its factorization.

442322441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40211142.

The product of its digits is 6144, while the sum is 26.

The square root of 442322441 is about 21031.4631207627. The cubic root of 442322441 is about 761.9263464930.

Adding to 442322441 its reverse (144223244), we get a palindrome (586545685).

The spelling of 442322441 in words is "four hundred forty-two million, three hundred twenty-two thousand, four hundred forty-one".