943691 has 6 divisors (see below), whose sum is σ = 1097820. Its totient is φ = 808836.

The previous prime is 943651. The next prime is 943693. The reversal of 943691 is 196349.

It is a de Polignac number, because none of the positive numbers 2^k-943691 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 943691.

It is not an unprimeable number, because it can be changed into a prime (943693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9581 + ... + 9678.

It is an arithmetic number, because the mean of its divisors is an integer number (182970).

2⁹⁴³⁶⁹¹ is an apocalyptic number.

943691 is a deficient number, since it is larger than the sum of its proper divisors (154129).

943691 is a wasteful number, since it uses less digits than its factorization.

943691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19273 (or 19266 counting only the distinct ones).

The product of its digits is 5832, while the sum is 32.

The square root of 943691 is about 971.4375944959. The cubic root of 943691 is about 98.0866580426.

The spelling of 943691 in words is "nine hundred forty-three thousand, six hundred ninety-one".