2787449 has 4 divisors (see below), whose sum is σ = 3185664. Its totient is φ = 2389236.

The previous prime is 2787443. The next prime is 2787461. The reversal of 2787449 is 9447872.

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 2787449 - 2¹² = 2783353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2787443) 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, 199097 + ... + 199110.

It is an arithmetic number, because the mean of its divisors is an integer number (796416).

2^2787449 is an apocalyptic number.

It is an amenable number.

2787449 is a deficient number, since it is larger than the sum of its proper divisors (398215).

2787449 is an equidigital number, since it uses as much as digits as its factorization.

2787449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398214.

The product of its digits is 112896, while the sum is 41.

The square root of 2787449 is about 1669.5655123415. The cubic root of 2787449 is about 140.7350624115.

The spelling of 2787449 in words is "two million, seven hundred eighty-seven thousand, four hundred forty-nine".