2400843 has 4 divisors (see below), whose sum is σ = 3201128. Its totient is φ = 1600560.

The previous prime is 2400841. The next prime is 2400851. The reversal of 2400843 is 3480042.

It is a happy number.

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

It is not a de Polignac number, because 2400843 - 2¹ = 2400841 is a prime.

It is a super-2 number, since 2×2400843² = 11528094221298, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2400841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400138 + ... + 400143.

It is an arithmetic number, because the mean of its divisors is an integer number (800282).

2^2400843 is an apocalyptic number.

2400843 is a deficient number, since it is larger than the sum of its proper divisors (800285).

2400843 is an equidigital number, since it uses as much as digits as its factorization.

2400843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800284.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 2400843 is about 1549.4653916755. The cubic root of 2400843 is about 133.9022640697.

Adding to 2400843 its reverse (3480042), we get a palindrome (5880885).

The spelling of 2400843 in words is "two million, four hundred thousand, eight hundred forty-three".