442440104 has 8 divisors (see below), whose sum is σ = 829575210. Its totient is φ = 221220048.

The previous prime is 442440071. The next prime is 442440109. The reversal of 442440104 is 401044244.

It can be written as a sum of positive squares in only one way, i.e., 353515204 + 88924900 = 18802^2 + 9430^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 442440104.

It is not an unprimeable number, because it can be changed into a prime (442440109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27652499 + ... + 27652514.

Almost surely, 2^442440104 is an apocalyptic number.

It is an amenable number.

442440104 is a deficient number, since it is larger than the sum of its proper divisors (387135106).

442440104 is a wasteful number, since it uses less digits than its factorization.

442440104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55305019 (or 55305015 counting only the distinct ones).

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

The square root of 442440104 is about 21034.2602437072. The cubic root of 442440104 is about 761.9939009760.

Adding to 442440104 its reverse (401044244), we get a palindrome (843484348).

The spelling of 442440104 in words is "four hundred forty-two million, four hundred forty thousand, one hundred four".