2039943 has 4 divisors (see below), whose sum is σ = 2719928. Its totient is φ = 1359960.

The previous prime is 2039929. The next prime is 2039951. The reversal of 2039943 is 3499302.

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

It is not a de Polignac number, because 2039943 - 2⁴ = 2039927 is a prime.

It is a super-2 number, since 2×2039943² = 8322734886498, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2039943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2039903) 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, 339988 + ... + 339993.

It is an arithmetic number, because the mean of its divisors is an integer number (679982).

2^2039943 is an apocalyptic number.

2039943 is a deficient number, since it is larger than the sum of its proper divisors (679985).

2039943 is an equidigital number, since it uses as much as digits as its factorization.

2039943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679984.

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 2039943 is about 1428.2657315780. The cubic root of 2039943 is about 126.8253328694.

The spelling of 2039943 in words is "two million, thirty-nine thousand, nine hundred forty-three".