921943 has 4 divisors (see below), whose sum is σ = 1005768. Its totient is φ = 838120.

The previous prime is 921931. The next prime is 921959. The reversal of 921943 is 349129.

It is a happy number.

921943 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 921943 - 2⁵ = 921911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (921913) 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, 41896 + ... + 41917.

It is an arithmetic number, because the mean of its divisors is an integer number (251442).

2⁹²¹⁹⁴³ is an apocalyptic number.

921943 is a deficient number, since it is larger than the sum of its proper divisors (83825).

921943 is a wasteful number, since it uses less digits than its factorization.

921943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83824.

The product of its digits is 1944, while the sum is 28.

The square root of 921943 is about 960.1786292144. The cubic root of 921943 is about 97.3273033211.

It can be divided in two parts, 9 and 21943, that added together give a cube (21952 = 28³).

The spelling of 921943 in words is "nine hundred twenty-one thousand, nine hundred forty-three".