2904591 has 4 divisors (see below), whose sum is σ = 3872792. Its totient is φ = 1936392.

The previous prime is 2904571. The next prime is 2904599. The reversal of 2904591 is 1954092.

It is a happy number.

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

It is not a de Polignac number, because 2904591 - 2¹⁹ = 2380303 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2904599) 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, 484096 + ... + 484101.

It is an arithmetic number, because the mean of its divisors is an integer number (968198).

2^2904591 is an apocalyptic number.

2904591 is a deficient number, since it is larger than the sum of its proper divisors (968201).

2904591 is an equidigital number, since it uses as much as digits as its factorization.

2904591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968200.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 2904591 is about 1704.2860675368. The cubic root of 2904591 is about 142.6795274991.

The spelling of 2904591 in words is "two million, nine hundred four thousand, five hundred ninety-one".