2090090 has 16 divisors (see below), whose sum is σ = 3843072. Its totient is φ = 818064.

The previous prime is 2090089. The next prime is 2090111. The reversal of 2090090 is 900902.

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 in 7 ways as a sum of consecutive naturals, for example, 1754 + ... + 2693.

It is an arithmetic number, because the mean of its divisors is an integer number (240192).

2^2090090 is an apocalyptic number.

2090090 is a deficient number, since it is larger than the sum of its proper divisors (1752982).

2090090 is a wasteful number, since it uses less digits than its factorization.

2090090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4501.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 2090090 is about 1445.7143562959. The cubic root of 2090090 is about 127.8561616663.

Adding to 2090090 its reverse (900902), we get a palindrome (2990992).

The spelling of 2090090 in words is "two million, ninety thousand, ninety".