2091004 has 12 divisors (see below), whose sum is σ = 3744664. Its totient is φ = 1021104.

The previous prime is 2090989. The next prime is 2091053. The reversal of 2091004 is 4001902.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5907 + ... + 6250.

2^2091004 is an apocalyptic number.

It is an amenable number.

2091004 is a deficient number, since it is larger than the sum of its proper divisors (1653660).

2091004 is a wasteful number, since it uses less digits than its factorization.

2091004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12204 (or 12202 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2091004 is about 1446.0304284489. The cubic root of 2091004 is about 127.8747961910.

Adding to 2091004 its reverse (4001902), we get a palindrome (6092906).

The spelling of 2091004 in words is "two million, ninety-one thousand, four".