2109489259 has 4 divisors (see below), whose sum is σ = 2110449016. Its totient is φ = 2108529504.

The previous prime is 2109489257. The next prime is 2109489281. The reversal of 2109489259 is 9529849012.

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 2109489259 - 2¹ = 2109489257 is a prime.

It is a super-3 number, since 3×2109489259³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2109489253) 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 3 ways as a sum of consecutive naturals, for example, 476574 + ... + 480979.

It is an arithmetic number, because the mean of its divisors is an integer number (527612254).

Almost surely, 2^2109489259 is an apocalyptic number.

2109489259 is a deficient number, since it is larger than the sum of its proper divisors (959757).

2109489259 is an equidigital number, since it uses as much as digits as its factorization.

2109489259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959756.

The product of its (nonzero) digits is 466560, while the sum is 49.

The square root of 2109489259 is about 45929.1765547783. The cubic root of 2109489259 is about 1282.5051157544.

The spelling of 2109489259 in words is "two billion, one hundred nine million, four hundred eighty-nine thousand, two hundred fifty-nine".