2005898989 has 8 divisors (see below), whose sum is σ = 2179585280. Its totient is φ = 1839024000.

The previous prime is 2005898981. The next prime is 2005899001. The reversal of 2005898989 is 9898985002.

It is a happy number.

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 2005898989 - 2³ = 2005898981 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 (2005898981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1702212 + ... + 1703389.

It is an arithmetic number, because the mean of its divisors is an integer number (272448160).

Almost surely, 2^2005898989 is an apocalyptic number.

It is an amenable number.

2005898989 is a deficient number, since it is larger than the sum of its proper divisors (173686291).

2005898989 is a wasteful number, since it uses less digits than its factorization.

2005898989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3405651.

The product of its (nonzero) digits is 3732480, while the sum is 58.

The square root of 2005898989 is about 44787.2636918131. The cubic root of 2005898989 is about 1261.1585440994.

The spelling of 2005898989 in words is "two billion, five million, eight hundred ninety-eight thousand, nine hundred eighty-nine".