2492891 has 4 divisors (see below), whose sum is σ = 2497392. Its totient is φ = 2488392.

The previous prime is 2492879. The next prime is 2492899. The reversal of 2492891 is 1982942.

2492891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2492891 - 2⁶ = 2492827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2492899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1280 + ... + 2573.

It is an arithmetic number, because the mean of its divisors is an integer number (624348).

2^2492891 is an apocalyptic number.

2492891 is a deficient number, since it is larger than the sum of its proper divisors (4501).

2492891 is an equidigital number, since it uses as much as digits as its factorization.

2492891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4500.

The product of its digits is 10368, while the sum is 35.

The square root of 2492891 is about 1578.8891664712. The cubic root of 2492891 is about 135.5921133992.

The spelling of 2492891 in words is "two million, four hundred ninety-two thousand, eight hundred ninety-one".