8943491 has 4 divisors (see below), whose sum is σ = 8956272. Its totient is φ = 8930712.

The previous prime is 8943463. The next prime is 8943523. The reversal of 8943491 is 1943498.

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 8943491 - 2¹⁰ = 8942467 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8943401) 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 3 ways as a sum of consecutive naturals, for example, 5276 + ... + 6761.

It is an arithmetic number, because the mean of its divisors is an integer number (2239068).

Almost surely, 2^8943491 is an apocalyptic number.

8943491 is a deficient number, since it is larger than the sum of its proper divisors (12781).

8943491 is a wasteful number, since it uses less digits than its factorization.

8943491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12780.

The product of its digits is 31104, while the sum is 38.

The square root of 8943491 is about 2990.5670030949. The cubic root of 8943491 is about 207.5721218302.

The spelling of 8943491 in words is "eight million, nine hundred forty-three thousand, four hundred ninety-one".