2587409 has 8 divisors (see below), whose sum is σ = 2920320. Its totient is φ = 2270800.

The previous prime is 2587399. The next prime is 2587411. The reversal of 2587409 is 9047852.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2587409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2587499) 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, 3737 + ... + 4374.

It is an arithmetic number, because the mean of its divisors is an integer number (365040).

2^2587409 is an apocalyptic number.

2587409 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2587409 is a deficient number, since it is larger than the sum of its proper divisors (332911).

2587409 is a wasteful number, since it uses less digits than its factorization.

2587409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8151.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 2587409 is about 1608.5425079867. The cubic root of 2587409 is about 137.2845595855.

It can be divided in two parts, 258 and 7409, that added together give a palindrome (7667).

The spelling of 2587409 in words is "two million, five hundred eighty-seven thousand, four hundred nine".