2491249 has 4 divisors (see below), whose sum is σ = 2500336. Its totient is φ = 2482164.

The previous prime is 2491243. The next prime is 2491259. The reversal of 2491249 is 9421942.

It is a happy number.

2491249 is an esthetic number in base 15, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2491249 - 2⁹ = 2490737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2491249.

It is not an unprimeable number, because it can be changed into a prime (2491243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4119 + ... + 4684.

It is an arithmetic number, because the mean of its divisors is an integer number (625084).

2^2491249 is an apocalyptic number.

It is an amenable number.

2491249 is a deficient number, since it is larger than the sum of its proper divisors (9087).

2491249 is an equidigital number, since it uses as much as digits as its factorization.

2491249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9086.

The product of its digits is 5184, while the sum is 31.

The square root of 2491249 is about 1578.3690949838. The cubic root of 2491249 is about 135.5623365724.

The spelling of 2491249 in words is "two million, four hundred ninety-one thousand, two hundred forty-nine".