2397843 has 20 divisors (see below), whose sum is σ = 4094640. Its totient is φ = 1369872.

The previous prime is 2397839. The next prime is 2397847. The reversal of 2397843 is 3487932.

It is an interprime number because it is at equal distance from previous prime (2397839) and next prime (2397847).

It is not a de Polignac number, because 2397843 - 2² = 2397839 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2397798 and 2397807.

It is not an unprimeable number, because it can be changed into a prime (2397847) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1548 + ... + 2681.

It is an arithmetic number, because the mean of its divisors is an integer number (204732).

2^2397843 is an apocalyptic number.

2397843 is a deficient number, since it is larger than the sum of its proper divisors (1696797).

2397843 is an equidigital number, since it uses as much as digits as its factorization.

2397843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4248 (or 4239 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 2397843 is about 1548.4970132357. The cubic root of 2397843 is about 133.8464678032.

It can be divided in two parts, 2397 and 843, that added together give a triangular number (3240 = T₈₀).

The spelling of 2397843 in words is "two million, three hundred ninety-seven thousand, eight hundred forty-three".