2409591 has 8 divisors (see below), whose sum is σ = 3287680. Its totient is φ = 1568952.

The previous prime is 2409569. The next prime is 2409593. The reversal of 2409591 is 1959042.

It is a happy number.

2409591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2409591 - 2⁵ = 2409559 is a prime.

It is a super-2 number, since 2×2409591² = 11612257574562, which contains 22 as substring.

It is a Duffinian number.

2409591 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2409593) 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 7 ways as a sum of consecutive naturals, for example, 9211 + ... + 9468.

It is an arithmetic number, because the mean of its divisors is an integer number (410960).

2^2409591 is an apocalyptic number.

2409591 is a deficient number, since it is larger than the sum of its proper divisors (878089).

2409591 is a wasteful number, since it uses less digits than its factorization.

2409591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18725.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 2409591 is about 1552.2857340065. The cubic root of 2409591 is about 134.0647010631.

The spelling of 2409591 in words is "two million, four hundred nine thousand, five hundred ninety-one".