2487409 has 4 divisors (see below), whose sum is σ = 2567680. Its totient is φ = 2407140.

The previous prime is 2487391. The next prime is 2487413. The reversal of 2487409 is 9047842.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2487409 - 2⁷ = 2487281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2487439) 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, 40089 + ... + 40150.

It is an arithmetic number, because the mean of its divisors is an integer number (641920).

2^2487409 is an apocalyptic number.

It is an amenable number.

2487409 is a deficient number, since it is larger than the sum of its proper divisors (80271).

2487409 is an equidigital number, since it uses as much as digits as its factorization.

2487409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80270.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 2487409 is about 1577.1521803555. The cubic root of 2487409 is about 135.4926490296.

The spelling of 2487409 in words is "two million, four hundred eighty-seven thousand, four hundred nine".