442445001 has 16 divisors (see below), whose sum is σ = 637761600. Its totient is φ = 271885248.

The previous prime is 442444999. The next prime is 442445011. The reversal of 442445001 is 100544244.

It is a happy number.

It is not a de Polignac number, because 442445001 - 2¹ = 442444999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (442445011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102786 + ... + 107003.

It is an arithmetic number, because the mean of its divisors is an integer number (39860100).

Almost surely, 2^442445001 is an apocalyptic number.

It is an amenable number.

442445001 is a deficient number, since it is larger than the sum of its proper divisors (195316599).

442445001 is a wasteful number, since it uses less digits than its factorization.

442445001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209848.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 442445001 is about 21034.3766487148. The cubic root of 442445001 is about 761.9967122570.

Adding to 442445001 its reverse (100544244), we get a palindrome (542989245).

The spelling of 442445001 in words is "four hundred forty-two million, four hundred forty-five thousand, one".