943391 has 4 divisors (see below), whose sum is σ = 984432. Its totient is φ = 902352.

The previous prime is 943387. The next prime is 943403. The reversal of 943391 is 193349.

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 943391 - 2² = 943387 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 (943301) 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, 20486 + ... + 20531.

It is an arithmetic number, because the mean of its divisors is an integer number (246108).

2⁹⁴³³⁹¹ is an apocalyptic number.

943391 is a deficient number, since it is larger than the sum of its proper divisors (41041).

943391 is a wasteful number, since it uses less digits than its factorization.

943391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41040.

The product of its digits is 2916, while the sum is 29.

The square root of 943391 is about 971.2831718917. The cubic root of 943391 is about 98.0762630029.

The spelling of 943391 in words is "nine hundred forty-three thousand, three hundred ninety-one".