2798986 has 4 divisors (see below), whose sum is σ = 4198482. Its totient is φ = 1399492.

The previous prime is 2798981. The next prime is 2798989. The reversal of 2798986 is 6898972.

It is a happy number.

2798986 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.

It can be written as a sum of positive squares in only one way, i.e., 1404225 + 1394761 = 1185^2 + 1181^2 .

It is not an unprimeable number, because it can be changed into a prime (2798981) 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 as a sum of consecutive naturals, namely, 699745 + ... + 699748.

2^2798986 is an apocalyptic number.

2798986 is a deficient number, since it is larger than the sum of its proper divisors (1399496).

2798986 is a wasteful number, since it uses less digits than its factorization.

2798986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1399495.

The product of its digits is 435456, while the sum is 49.

The square root of 2798986 is about 1673.0170351793. The cubic root of 2798986 is about 140.9289583944.

The spelling of 2798986 in words is "two million, seven hundred ninety-eight thousand, nine hundred eighty-six".