2591943 has 8 divisors (see below), whose sum is σ = 3483648. Its totient is φ = 1714104.

The previous prime is 2591921. The next prime is 2591969. The reversal of 2591943 is 3491952.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2591943 - 2¹² = 2587847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2591143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3021 + ... + 3782.

It is an arithmetic number, because the mean of its divisors is an integer number (435456).

2^2591943 is an apocalyptic number.

2591943 is a deficient number, since it is larger than the sum of its proper divisors (891705).

2591943 is a wasteful number, since it uses less digits than its factorization.

2591943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6933.

The product of its digits is 9720, while the sum is 33.

The square root of 2591943 is about 1609.9512414977. The cubic root of 2591943 is about 137.3647021745.

Subtracting 2591943 from its reverse (3491952), we obtain a palindrome (900009).

The spelling of 2591943 in words is "two million, five hundred ninety-one thousand, nine hundred forty-three".