42444887 has 4 divisors (see below), whose sum is σ = 42699216. Its totient is φ = 42190560.

The previous prime is 42444877. The next prime is 42444889. The reversal of 42444887 is 78844424.

42444887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 42444887 - 2⁶ = 42444823 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 (42444889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126914 + ... + 127247.

It is an arithmetic number, because the mean of its divisors is an integer number (10674804).

Almost surely, 2^42444887 is an apocalyptic number.

42444887 is a deficient number, since it is larger than the sum of its proper divisors (254329).

42444887 is a wasteful number, since it uses less digits than its factorization.

42444887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254328.

The product of its digits is 229376, while the sum is 41.

The square root of 42444887 is about 6514.9740598102. The cubic root of 42444887 is about 348.8256888774.

The spelling of 42444887 in words is "forty-two million, four hundred forty-four thousand, eight hundred eighty-seven".