2039643 has 12 divisors (see below), whose sum is σ = 3119688. Its totient is φ = 1279680.

The previous prime is 2039641. The next prime is 2039647. The reversal of 2039643 is 3469302.

It is not a de Polignac number, because 2039643 - 2¹ = 2039641 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2039641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6513 + ... + 6818.

It is an arithmetic number, because the mean of its divisors is an integer number (259974).

2^2039643 is an apocalyptic number.

2039643 is a deficient number, since it is larger than the sum of its proper divisors (1080045).

2039643 is a wasteful number, since it uses less digits than its factorization.

2039643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13354 (or 13351 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 2039643 is about 1428.1607052429. The cubic root of 2039643 is about 126.8191154628.

The spelling of 2039643 in words is "two million, thirty-nine thousand, six hundred forty-three".