2090404 has 6 divisors (see below), whose sum is σ = 3658214. Its totient is φ = 1045200.

The previous prime is 2090381. The next prime is 2090441. The reversal of 2090404 is 4040902.

It can be written as a sum of positive squares in only one way, i.e., 1557504 + 532900 = 1248^2 + 730^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 261297 + ... + 261304.

2^2090404 is an apocalyptic number.

It is an amenable number.

2090404 is a deficient number, since it is larger than the sum of its proper divisors (1567810).

2090404 is a wasteful number, since it uses less digits than its factorization.

2090404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522605 (or 522603 counting only the distinct ones).

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

The square root of 2090404 is about 1445.8229490501. The cubic root of 2090404 is about 127.8625640739.

The spelling of 2090404 in words is "two million, ninety thousand, four hundred four".