2989398885 has 16 divisors (see below), whose sum is σ = 5217860160. Its totient is φ = 1449405440.

The previous prime is 2989398871. The next prime is 2989398889. The reversal of 2989398885 is 5888939892.

It is not a de Polignac number, because 2989398885 - 2⁴ = 2989398869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2989398889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9058620 + ... + 9058949.

It is an arithmetic number, because the mean of its divisors is an integer number (326116260).

Almost surely, 2^2989398885 is an apocalyptic number.

It is an amenable number.

2989398885 is a deficient number, since it is larger than the sum of its proper divisors (2228461275).

2989398885 is a wasteful number, since it uses less digits than its factorization.

2989398885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18117588.

The product of its digits is 89579520, while the sum is 69.

The square root of 2989398885 is about 54675.3956089940. The cubic root of 2989398885 is about 1440.5487371446.

It can be divided in two parts, 29893 and 98885, that added together give a triangular number (128778 = T₅₀₇).

The spelling of 2989398885 in words is "two billion, nine hundred eighty-nine million, three hundred ninety-eight thousand, eight hundred eighty-five".