2909444 has 12 divisors (see below), whose sum is σ = 5105100. Its totient is φ = 1450848.

The previous prime is 2909429. The next prime is 2909447. The reversal of 2909444 is 4449092.

It can be written as a sum of positive squares in 2 ways, for example, as 1188100 + 1721344 = 1090^2 + 1312^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2909444.

It is not an unprimeable number, because it can be changed into a prime (2909447) 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, 1322 + ... + 2750.

It is an arithmetic number, because the mean of its divisors is an integer number (425425).

2^2909444 is an apocalyptic number.

It is an amenable number.

2909444 is a deficient number, since it is larger than the sum of its proper divisors (2195656).

2909444 is a wasteful number, since it uses less digits than its factorization.

2909444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1942 (or 1940 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 2909444 is about 1705.7092366520. The cubic root of 2909444 is about 142.7589464224.

The spelling of 2909444 in words is "two million, nine hundred nine thousand, four hundred forty-four".