2432009 has 4 divisors (see below), whose sum is σ = 2471940. Its totient is φ = 2392080.

The previous prime is 2431999. The next prime is 2432041. The reversal of 2432009 is 9002342.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9002342 = 2 ⋅4501171.

It can be written as a sum of positive squares in 2 ways, for example, as 595984 + 1836025 = 772^2 + 1355^2 .

It is a cyclic number.

It is not a de Polignac number, because 2432009 - 2¹⁶ = 2366473 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2432069) 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, 19874 + ... + 19995.

It is an arithmetic number, because the mean of its divisors is an integer number (617985).

2^2432009 is an apocalyptic number.

It is an amenable number.

2432009 is a deficient number, since it is larger than the sum of its proper divisors (39931).

2432009 is an equidigital number, since it uses as much as digits as its factorization.

2432009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39930.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 2432009 is about 1559.4899807309. The cubic root of 2432009 is about 134.4791821587.

The spelling of 2432009 in words is "two million, four hundred thirty-two thousand, nine".