2281879 has 4 divisors (see below), whose sum is σ = 2355520. Its totient is φ = 2208240.

The previous prime is 2281861. The next prime is 2281883. The reversal of 2281879 is 9781822.

2281879 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, and also an emirpimes, since its reverse is a distinct semiprime: 9781822 = 2 ⋅4890911.

It is a cyclic number.

It is not a de Polignac number, because 2281879 - 2⁷ = 2281751 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 (2281079) 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, 36774 + ... + 36835.

It is an arithmetic number, because the mean of its divisors is an integer number (588880).

2^2281879 is an apocalyptic number.

2281879 is a deficient number, since it is larger than the sum of its proper divisors (73641).

2281879 is an equidigital number, since it uses as much as digits as its factorization.

2281879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73640.

The product of its digits is 16128, while the sum is 37.

The square root of 2281879 is about 1510.5889579896. The cubic root of 2281879 is about 131.6530335365.

It can be divided in two parts, 2281 and 879, that added together give a triangular number (3160 = T₇₉).

The spelling of 2281879 in words is "two million, two hundred eighty-one thousand, eight hundred seventy-nine".