2040491 has 8 divisors (see below), whose sum is σ = 2158080. Its totient is φ = 1925352.

The previous prime is 2040481. The next prime is 2040497. The reversal of 2040491 is 1940402.

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 2040491 - 2⁶ = 2040427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2040497) 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, 1256 + ... + 2378.

It is an arithmetic number, because the mean of its divisors is an integer number (269760).

2^2040491 is an apocalyptic number.

2040491 is a deficient number, since it is larger than the sum of its proper divisors (117589).

2040491 is a wasteful number, since it uses less digits than its factorization.

2040491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 2040491 is about 1428.4575597476. The cubic root of 2040491 is about 126.8366884252.

Adding to 2040491 its reverse (1940402), we get a palindrome (3980893).

The spelling of 2040491 in words is "two million, forty thousand, four hundred ninety-one".