2278839 has 8 divisors (see below), whose sum is σ = 3050752. Its totient is φ = 1513080.

The previous prime is 2278831. The next prime is 2278847. The reversal of 2278839 is 9388722.

It is an interprime number because it is at equal distance from previous prime (2278831) and next prime (2278847).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2278839 - 2³ = 2278831 is a prime.

It is a d-powerful number, because it can be written as 2 + 2¹¹ + 7⁴ + 8 + 8⁷ + 3¹¹ + 9² .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2278797 and 2278806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2278831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 589 + ... + 2214.

It is an arithmetic number, because the mean of its divisors is an integer number (381344).

2^2278839 is an apocalyptic number.

2278839 is a deficient number, since it is larger than the sum of its proper divisors (771913).

2278839 is a wasteful number, since it uses less digits than its factorization.

2278839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3077.

The product of its digits is 48384, while the sum is 39.

The square root of 2278839 is about 1509.5823925841. The cubic root of 2278839 is about 131.5945432770.

The spelling of 2278839 in words is "two million, two hundred seventy-eight thousand, eight hundred thirty-nine".