8939491 has 4 divisors (see below), whose sum is σ = 9752184. Its totient is φ = 8126800.

The previous prime is 8939471. The next prime is 8939521. The reversal of 8939491 is 1949398.

8939491 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 not a de Polignac number, because 8939491 - 2⁷ = 8939363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8939431) 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, 406330 + ... + 406351.

It is an arithmetic number, because the mean of its divisors is an integer number (2438046).

Almost surely, 2^8939491 is an apocalyptic number.

8939491 is a deficient number, since it is larger than the sum of its proper divisors (812693).

8939491 is a wasteful number, since it uses less digits than its factorization.

8939491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812692.

The product of its digits is 69984, while the sum is 43.

The square root of 8939491 is about 2989.8981588007. The cubic root of 8939491 is about 207.5411714887.

The spelling of 8939491 in words is "eight million, nine hundred thirty-nine thousand, four hundred ninety-one".