2944721 has 8 divisors (see below), whose sum is σ = 3273984. Its totient is φ = 2630160.

The previous prime is 2944709. The next prime is 2944727. The reversal of 2944721 is 1274492.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2944721 - 2⁶ = 2944657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2944727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3251 + ... + 4056.

It is an arithmetic number, because the mean of its divisors is an integer number (409248).

2^2944721 is an apocalyptic number.

It is an amenable number.

2944721 is a deficient number, since it is larger than the sum of its proper divisors (329263).

2944721 is a wasteful number, since it uses less digits than its factorization.

2944721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7351.

The product of its digits is 4032, while the sum is 29.

The square root of 2944721 is about 1716.0189392894. The cubic root of 2944721 is about 143.3336139650. Note that the first 3 decimals are identical.

The spelling of 2944721 in words is "two million, nine hundred forty-four thousand, seven hundred twenty-one".