2019404 has 6 divisors (see below), whose sum is σ = 3533964. Its totient is φ = 1009700.

The previous prime is 2019403. The next prime is 2019419. The reversal of 2019404 is 4049102.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2019401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252422 + ... + 252429.

It is an arithmetic number, because the mean of its divisors is an integer number (588994).

2^2019404 is an apocalyptic number.

It is an amenable number.

2019404 is a deficient number, since it is larger than the sum of its proper divisors (1514560).

2019404 is a wasteful number, since it uses less digits than its factorization.

2019404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504855 (or 504853 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 2019404 is about 1421.0573528187. The cubic root of 2019404 is about 126.3982527932.

The spelling of 2019404 in words is "two million, nineteen thousand, four hundred four".