889881445 has 8 divisors (see below), whose sum is σ = 1075653144. Its totient is φ = 706708224.

The previous prime is 889881437. The next prime is 889881451. The reversal of 889881445 is 544188988.

It can be written as a sum of positive squares in 4 ways, for example, as 276922881 + 612958564 = 16641^2 + 24758^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 889881445 - 2³ = 889881437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 648864 + ... + 650233.

It is an arithmetic number, because the mean of its divisors is an integer number (134456643).

Almost surely, 2^889881445 is an apocalyptic number.

It is an amenable number.

889881445 is a deficient number, since it is larger than the sum of its proper divisors (185771699).

889881445 is a wasteful number, since it uses less digits than its factorization.

889881445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299239.

The product of its digits is 2949120, while the sum is 55.

The square root of 889881445 is about 29830.8807278632. The cubic root of 889881445 is about 961.8574588216.

The spelling of 889881445 in words is "eight hundred eighty-nine million, eight hundred eighty-one thousand, four hundred forty-five".