2798279 has 4 divisors (see below), whose sum is σ = 3052680. Its totient is φ = 2543880.

The previous prime is 2798269. The next prime is 2798281. The reversal of 2798279 is 9728972.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2798279 - 2⁸ = 2798023 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 (2798269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127184 + ... + 127205.

It is an arithmetic number, because the mean of its divisors is an integer number (763170).

2^2798279 is an apocalyptic number.

2798279 is a deficient number, since it is larger than the sum of its proper divisors (254401).

2798279 is a wasteful number, since it uses less digits than its factorization.

2798279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254400.

The product of its digits is 127008, while the sum is 44.

The square root of 2798279 is about 1672.8057269151. The cubic root of 2798279 is about 140.9170915774.

It can be divided in two parts, 279 and 8279, that added together give a palindrome (8558).

The spelling of 2798279 in words is "two million, seven hundred ninety-eight thousand, two hundred seventy-nine".