2239743 has 16 divisors (see below), whose sum is σ = 3309696. Its totient is φ = 1335840.

The previous prime is 2239723. The next prime is 2239747. The reversal of 2239743 is 3479322.

It is not a de Polignac number, because 2239743 - 2⁵ = 2239711 is a prime.

2239743 is a lucky number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 2239743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2239747) 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 15 ways as a sum of consecutive naturals, for example, 1705 + ... + 2717.

It is an arithmetic number, because the mean of its divisors is an integer number (206856).

2^2239743 is an apocalyptic number.

2239743 is a deficient number, since it is larger than the sum of its proper divisors (1069953).

2239743 is a wasteful number, since it uses less digits than its factorization.

2239743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094.

The product of its digits is 9072, while the sum is 30.

The square root of 2239743 is about 1496.5770945728. The cubic root of 2239743 is about 130.8376482635.

The spelling of 2239743 in words is "two million, two hundred thirty-nine thousand, seven hundred forty-three".