2004428889 has 32 divisors (see below), whose sum is σ = 3076963200. Its totient is φ = 1288797120.

The previous prime is 2004428879. The next prime is 2004428929. The reversal of 2004428889 is 9888244002.

It is a happy number.

It is not a de Polignac number, because 2004428889 - 2¹¹ = 2004426841 is a prime.

It is a super-3 number, since 3×2004428889³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2004428819) 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 31 ways as a sum of consecutive naturals, for example, 72559 + ... + 96299.

It is an arithmetic number, because the mean of its divisors is an integer number (96155100).

Almost surely, 2^2004428889 is an apocalyptic number.

It is an amenable number.

2004428889 is a deficient number, since it is larger than the sum of its proper divisors (1072534311).

2004428889 is a wasteful number, since it uses less digits than its factorization.

2004428889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23862 (or 23856 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 45.

The square root of 2004428889 is about 44770.8486517734. The cubic root of 2004428889 is about 1260.8503726673.

The spelling of 2004428889 in words is "two billion, four million, four hundred twenty-eight thousand, eight hundred eighty-nine".