2909404 has 6 divisors (see below), whose sum is σ = 5091464. Its totient is φ = 1454700.

The previous prime is 2909393. The next prime is 2909407. The reversal of 2909404 is 4049092.

2909404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2909407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363672 + ... + 363679.

2^2909404 is an apocalyptic number.

It is an amenable number.

2909404 is a deficient number, since it is larger than the sum of its proper divisors (2182060).

2909404 is a wasteful number, since it uses less digits than its factorization.

2909404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727355 (or 727353 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 2909404 is about 1705.6975112839. The cubic root of 2909404 is about 142.7582921870.

The spelling of 2909404 in words is "two million, nine hundred nine thousand, four hundred four".