2798491 has 4 divisors (see below), whose sum is σ = 2945800. Its totient is φ = 2651184.

The previous prime is 2798461. The next prime is 2798503. The reversal of 2798491 is 1948972.

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

It is not a de Polignac number, because 2798491 - 2⁵ = 2798459 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 (2798461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73626 + ... + 73663.

It is an arithmetic number, because the mean of its divisors is an integer number (736450).

2^2798491 is an apocalyptic number.

2798491 is a deficient number, since it is larger than the sum of its proper divisors (147309).

2798491 is a wasteful number, since it uses less digits than its factorization.

2798491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147308.

The product of its digits is 36288, while the sum is 40.

The square root of 2798491 is about 1672.8690923082. The cubic root of 2798491 is about 140.9206501538.

The spelling of 2798491 in words is "two million, seven hundred ninety-eight thousand, four hundred ninety-one".