2788949 has 4 divisors (see below), whose sum is σ = 2864364. Its totient is φ = 2713536.

The previous prime is 2788939. The next prime is 2788979. The reversal of 2788949 is 9498872.

2788949 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 can be written as a sum of positive squares in 2 ways, for example, as 2502724 + 286225 = 1582^2 + 535^2 .

It is a cyclic number.

It is not a de Polignac number, because 2788949 - 2⁸ = 2788693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2788939) 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, 37652 + ... + 37725.

It is an arithmetic number, because the mean of its divisors is an integer number (716091).

2^2788949 is an apocalyptic number.

It is an amenable number.

2788949 is a deficient number, since it is larger than the sum of its proper divisors (75415).

2788949 is an equidigital number, since it uses as much as digits as its factorization.

2788949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75414.

The product of its digits is 290304, while the sum is 47.

The square root of 2788949 is about 1670.0146705942. The cubic root of 2788949 is about 140.7603023039.

It can be divided in two parts, 27889 and 49, that multiplied together give a square (1366561 = 1169²).

The spelling of 2788949 in words is "two million, seven hundred eighty-eight thousand, nine hundred forty-nine".