2004869 has 4 divisors (see below), whose sum is σ = 2015244. Its totient is φ = 1994496.

The previous prime is 2004851. The next prime is 2004881. The reversal of 2004869 is 9684002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1723969 + 280900 = 1313^2 + 530^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2004869 is a prime.

It is a super-2 number, since 2×2004869² = 8038999414322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2004809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4892 + ... + 5285.

It is an arithmetic number, because the mean of its divisors is an integer number (503811).

2^2004869 is an apocalyptic number.

It is an amenable number.

2004869 is a deficient number, since it is larger than the sum of its proper divisors (10375).

2004869 is a wasteful number, since it uses less digits than its factorization.

2004869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10374.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 2004869 is about 1415.9339673869. The cubic root of 2004869 is about 126.0942647249.

The spelling of 2004869 in words is "two million, four thousand, eight hundred sixty-nine".