2798789 has 8 divisors (see below), whose sum is σ = 3209088. Its totient is φ = 2391120.

The previous prime is 2798777. The next prime is 2798821. The reversal of 2798789 is 9878972.

It is a happy number.

2798789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2798789 - 2¹⁶ = 2733253 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2798729) 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 7 ways as a sum of consecutive naturals, for example, 2999 + ... + 3819.

It is an arithmetic number, because the mean of its divisors is an integer number (401136).

2^2798789 is an apocalyptic number.

It is an amenable number.

2798789 is a deficient number, since it is larger than the sum of its proper divisors (410299).

2798789 is an equidigital number, since it uses as much as digits as its factorization.

2798789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315.

The product of its digits is 508032, while the sum is 50.

The square root of 2798789 is about 1672.9581584726. The cubic root of 2798789 is about 140.9256519998.

It can be divided in two parts, 2 and 798789, that multiplied together give a triangular number (1597578 = T₁₇₈₇).

The spelling of 2798789 in words is "two million, seven hundred ninety-eight thousand, seven hundred eighty-nine".