442044311 has 4 divisors (see below), whose sum is σ = 442241400. Its totient is φ = 441847224.

The previous prime is 442044301. The next prime is 442044347. The reversal of 442044311 is 113440244.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442044311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442044301) 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, 95141 + ... + 99678.

It is an arithmetic number, because the mean of its divisors is an integer number (110560350).

Almost surely, 2^442044311 is an apocalyptic number.

442044311 is a deficient number, since it is larger than the sum of its proper divisors (197089).

442044311 is a wasteful number, since it uses less digits than its factorization.

442044311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197088.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 442044311 is about 21024.8498448859. The cubic root of 442044311 is about 761.7666145964.

Adding to 442044311 its reverse (113440244), we get a palindrome (555484555).

The spelling of 442044311 in words is "four hundred forty-two million, forty-four thousand, three hundred eleven".