2398891 has 4 divisors (see below), whose sum is σ = 2616984. Its totient is φ = 2180800.

The previous prime is 2398889. The next prime is 2398901. The reversal of 2398891 is 1988932.

2398891 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 is a cyclic number.

It is not a de Polignac number, because 2398891 - 2¹ = 2398889 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (2398861) 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 3 ways as a sum of consecutive naturals, for example, 109030 + ... + 109051.

It is an arithmetic number, because the mean of its divisors is an integer number (654246).

2^2398891 is an apocalyptic number.

2398891 is a deficient number, since it is larger than the sum of its proper divisors (218093).

2398891 is a wasteful number, since it uses less digits than its factorization.

2398891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218092.

The product of its digits is 31104, while the sum is 40.

The square root of 2398891 is about 1548.8353689143. The cubic root of 2398891 is about 133.8659645853.

It can be divided in two parts, 2 and 398891, that added together give a palindrome (398893).

The spelling of 2398891 in words is "two million, three hundred ninety-eight thousand, eight hundred ninety-one".