2091489 has 8 divisors (see below), whose sum is σ = 2801280. Its totient is φ = 1388016.

The previous prime is 2091487. The next prime is 2091497. The reversal of 2091489 is 9841902.

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

It is not a de Polignac number, because 2091489 - 2¹ = 2091487 is a prime.

It is a Curzon number.

2091489 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2091487) 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, 742 + ... + 2175.

It is an arithmetic number, because the mean of its divisors is an integer number (350160).

2^2091489 is an apocalyptic number.

It is an amenable number.

2091489 is a deficient number, since it is larger than the sum of its proper divisors (709791).

2091489 is a wasteful number, since it uses less digits than its factorization.

2091489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3159.

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

The square root of 2091489 is about 1446.1981192077. The cubic root of 2091489 is about 127.8846821089.

The spelling of 2091489 in words is "two million, ninety-one thousand, four hundred eighty-nine".