2109489 has 8 divisors (see below), whose sum is σ = 2909760. Its totient is φ = 1357776.

The previous prime is 2109461. The next prime is 2109509. The reversal of 2109489 is 9849012.

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

It is not a de Polignac number, because 2109489 - 2¹⁶ = 2043953 is a prime.

It is a super-2 number, since 2×2109489² = 8899887682242, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2109449) 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, 12037 + ... + 12210.

It is an arithmetic number, because the mean of its divisors is an integer number (363720).

2^2109489 is an apocalyptic number.

2109489 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2109489 is a deficient number, since it is larger than the sum of its proper divisors (800271).

2109489 is a wasteful number, since it uses less digits than its factorization.

2109489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24279.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 2109489 is about 1452.4080005288. The cubic root of 2109489 is about 128.2505063266.

It can be divided in two parts, 2109 and 489, that multiplied together give a palindrome (1031301).

The spelling of 2109489 in words is "two million, one hundred nine thousand, four hundred eighty-nine".