2443897 has 4 divisors (see below), whose sum is σ = 2468196. Its totient is φ = 2419600.

The previous prime is 2443879. The next prime is 2443901. The reversal of 2443897 is 7983442.

It is a happy number.

2443897 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 2 ways, for example, as 1590121 + 853776 = 1261^2 + 924^2 .

It is a cyclic number.

It is not a de Polignac number, because 2443897 - 2¹¹ = 2441849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2443807) 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, 11998 + ... + 12199.

It is an arithmetic number, because the mean of its divisors is an integer number (617049).

2^2443897 is an apocalyptic number.

It is an amenable number.

2443897 is a deficient number, since it is larger than the sum of its proper divisors (24299).

2443897 is a wasteful number, since it uses less digits than its factorization.

2443897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24298.

The product of its digits is 48384, while the sum is 37.

The square root of 2443897 is about 1563.2968368163. The cubic root of 2443897 is about 134.6979437803.

It can be divided in two parts, 2443 and 897, that multiplied together give a triangular number (2191371 = T₂₀₉₃).

The spelling of 2443897 in words is "two million, four hundred forty-three thousand, eight hundred ninety-seven".