2747289 has 4 divisors (see below), whose sum is σ = 3663056. Its totient is φ = 1831524.

The previous prime is 2747279. The next prime is 2747293. The reversal of 2747289 is 9827472.

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 not a de Polignac number, because 2747289 - 2⁴ = 2747273 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2³ + 7 + 4⁵ + 7⁶ + 2²¹ + 8 + 9⁶ .

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2747249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 457879 + ... + 457884.

It is an arithmetic number, because the mean of its divisors is an integer number (915764).

2^2747289 is an apocalyptic number.

It is an amenable number.

2747289 is a deficient number, since it is larger than the sum of its proper divisors (915767).

2747289 is an equidigital number, since it uses as much as digits as its factorization.

2747289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915766.

The product of its digits is 56448, while the sum is 39.

The square root of 2747289 is about 1657.4947963719. The cubic root of 2747289 is about 140.0559130407.

The spelling of 2747289 in words is "two million, seven hundred forty-seven thousand, two hundred eighty-nine".