2404090 has 16 divisors (see below), whose sum is σ = 4660488. Its totient is φ = 887616.

The previous prime is 2404079. The next prime is 2404093. The reversal of 2404090 is 904042.

It can be written as a sum of positive squares in 4 ways, for example, as 1390041 + 1014049 = 1179^2 + 1007^2 .

It is not an unprimeable number, because it can be changed into a prime (2404093) 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, 9117 + ... + 9376.

2^2404090 is an apocalyptic number.

2404090 is a deficient number, since it is larger than the sum of its proper divisors (2256398).

2404090 is a wasteful number, since it uses less digits than its factorization.

2404090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18513.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2404090 is about 1550.5128183927. The cubic root of 2404090 is about 133.9626018751.

The spelling of 2404090 in words is "two million, four hundred four thousand, ninety".