2280139 has 4 divisors (see below), whose sum is σ = 2283424. Its totient is φ = 2276856.

The previous prime is 2280127. The next prime is 2280163. The reversal of 2280139 is 9310822.

2280139 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: 9310822 = 2 ⋅4655411.

It is a cyclic number.

It is not a de Polignac number, because 2280139 - 2⁵ = 2280107 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2280169) 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, 147 + ... + 2140.

It is an arithmetic number, because the mean of its divisors is an integer number (570856).

2^2280139 is an apocalyptic number.

2280139 is a deficient number, since it is larger than the sum of its proper divisors (3285).

2280139 is an equidigital number, since it uses as much as digits as its factorization.

2280139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3284.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 2280139 is about 1510.0129138521. The cubic root of 2280139 is about 131.6195619211.

The spelling of 2280139 in words is "two million, two hundred eighty thousand, one hundred thirty-nine".