444425887 has 4 divisors (see below), whose sum is σ = 445568760. Its totient is φ = 443283016.

The previous prime is 444425879. The next prime is 444425909. The reversal of 444425887 is 788524444.

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 444425887 - 2³ = 444425879 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 (444425587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 570853 + ... + 571630.

It is an arithmetic number, because the mean of its divisors is an integer number (111392190).

Almost surely, 2^444425887 is an apocalyptic number.

444425887 is a deficient number, since it is larger than the sum of its proper divisors (1142873).

444425887 is a wasteful number, since it uses less digits than its factorization.

444425887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142872.

The product of its digits is 1146880, while the sum is 46.

The square root of 444425887 is about 21081.4109347548. The cubic root of 444425887 is about 763.1322067356.

The spelling of 444425887 in words is "four hundred forty-four million, four hundred twenty-five thousand, eight hundred eighty-seven".