2387409 has 4 divisors (see below), whose sum is σ = 3183216. Its totient is φ = 1591604.

The previous prime is 2387401. The next prime is 2387417. The reversal of 2387409 is 9047832.

2387409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 an interprime number because it is at equal distance from previous prime (2387401) and next prime (2387417).

It is a cyclic number.

It is not a de Polignac number, because 2387409 - 2³ = 2387401 is a prime.

It is an Ulam number.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 2387409.

It is not an unprimeable number, because it can be changed into a prime (2387401) 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 3 ways as a sum of consecutive naturals, for example, 397899 + ... + 397904.

It is an arithmetic number, because the mean of its divisors is an integer number (795804).

2^2387409 is an apocalyptic number.

It is an amenable number.

2387409 is a deficient number, since it is larger than the sum of its proper divisors (795807).

2387409 is an equidigital number, since it uses as much as digits as its factorization.

2387409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795806.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 2387409 is about 1545.1242668472. The cubic root of 2387409 is about 133.6520452025.

The spelling of 2387409 in words is "two million, three hundred eighty-seven thousand, four hundred nine".