939643 has 4 divisors (see below), whose sum is σ = 951048. Its totient is φ = 928240.

The previous prime is 939623. The next prime is 939649. The reversal of 939643 is 346939.

939643 = T₁₂ + T₁₃ + ... + T₁₇₇.

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 939643 - 2⁵ = 939611 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 939599 and 939608.

It is not an unprimeable number, because it can be changed into a prime (939649) 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 3 ways as a sum of consecutive naturals, for example, 5578 + ... + 5743.

It is an arithmetic number, because the mean of its divisors is an integer number (237762).

2⁹³⁹⁶⁴³ is an apocalyptic number.

939643 is a deficient number, since it is larger than the sum of its proper divisors (11405).

939643 is a wasteful number, since it uses less digits than its factorization.

939643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11404.

The product of its digits is 17496, while the sum is 34.

The square root of 939643 is about 969.3518453070. The cubic root of 939643 is about 97.9462081580.

Subtracting from 939643 its reverse (346939), we obtain a cube (592704 = 84³).

The spelling of 939643 in words is "nine hundred thirty-nine thousand, six hundred forty-three".