2609404 has 24 divisors (see below), whose sum is σ = 5348448.
Its totient is φ = 1090560.
The previous prime is 2609401. The next prime is 2609407. The reversal of 2609404 is 4049062.
2609404 = 2322 + 2332 + ... + 2722.
It is an interprime number because it is at equal distance from previous prime (2609401) and next prime (2609407).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2609401) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12 + ... + 2284.
It is an arithmetic number, because the mean of its divisors is an integer number (222852).
22609404 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 2609404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2674224).
2609404 is an abundant number, since it is smaller than the sum of its proper divisors (2739044).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2609404 is a wasteful number, since it uses less digits than its factorization.
2609404 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2325 (or 2323 counting only the distinct ones).
The product of its (nonzero) digits is 1728, while the sum is 25.
The square root of 2609404 is about 1615.3649742396.
The cubic root of 2609404 is about 137.6724711761.
The spelling of 2609404 in words is "two million, six hundred nine thousand, four hundred four".