2944639 has 4 divisors (see below), whose sum is σ = 3099640. Its totient is φ = 2789640.

The previous prime is 2944637. The next prime is 2944657. The reversal of 2944639 is 9364492.

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

It is a cyclic number.

It is not a de Polignac number, because 2944639 - 2¹ = 2944637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2944598 and 2944607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2944637) 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, 77472 + ... + 77509.

It is an arithmetic number, because the mean of its divisors is an integer number (774910).

2^2944639 is an apocalyptic number.

2944639 is a deficient number, since it is larger than the sum of its proper divisors (155001).

2944639 is a wasteful number, since it uses less digits than its factorization.

2944639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155000.

The product of its digits is 46656, while the sum is 37.

The square root of 2944639 is about 1715.9950466129. The cubic root of 2944639 is about 143.3322835089.

The spelling of 2944639 in words is "two million, nine hundred forty-four thousand, six hundred thirty-nine".