2440404 has 18 divisors (see below), whose sum is σ = 6168890. Its totient is φ = 813456.

The previous prime is 2440393. The next prime is 2440411. The reversal of 2440404 is 4040442.

It is a happy number.

2440404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2396304 + 44100 = 1548^2 + 210^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

2440404 is a modest number, since divided by 404 gives 244 as remainder.

It is a nialpdrome in base 12.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 33859 + ... + 33930.

2^2440404 is an apocalyptic number.

It is an amenable number.

2440404 is an abundant number, since it is smaller than the sum of its proper divisors (3728486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2440404 is a wasteful number, since it uses less digits than its factorization.

2440404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67799 (or 67794 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 2440404 is about 1562.1792470776. The cubic root of 2440404 is about 134.6337397305.

Adding to 2440404 its reverse (4040442), we get a palindrome (6480846).

The spelling of 2440404 in words is "two million, four hundred forty thousand, four hundred four".