8938491 has 4 divisors (see below), whose sum is σ = 11917992. Its totient is φ = 5958992.

The previous prime is 8938477. The next prime is 8938511. The reversal of 8938491 is 1948398.

8938491 is digitally balanced in base 3, 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 8938491 - 2⁶ = 8938427 is a prime.

8938491 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8938471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1489746 + ... + 1489751.

It is an arithmetic number, because the mean of its divisors is an integer number (2979498).

Almost surely, 2^8938491 is an apocalyptic number.

8938491 is a deficient number, since it is larger than the sum of its proper divisors (2979501).

8938491 is a wasteful number, since it uses less digits than its factorization.

8938491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2979500.

The product of its digits is 62208, while the sum is 42.

The square root of 8938491 is about 2989.7309243475. The cubic root of 8938491 is about 207.5334324608.

The spelling of 8938491 in words is "eight million, nine hundred thirty-eight thousand, four hundred ninety-one".