8938993 has 4 divisors (see below), whose sum is σ = 10216000. Its totient is φ = 7661988.

The previous prime is 8938961. The next prime is 8938997. The reversal of 8938993 is 3998398.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8938993 - 2⁵ = 8938961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8938997) 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, 638493 + ... + 638506.

It is an arithmetic number, because the mean of its divisors is an integer number (2554000).

Almost surely, 2^8938993 is an apocalyptic number.

It is an amenable number.

8938993 is a deficient number, since it is larger than the sum of its proper divisors (1277007).

8938993 is a wasteful number, since it uses less digits than its factorization.

8938993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277006.

The product of its digits is 419904, while the sum is 49.

The square root of 8938993 is about 2989.8148772123. The cubic root of 8938993 is about 207.5373175250.

The spelling of 8938993 in words is "eight million, nine hundred thirty-eight thousand, nine hundred ninety-three".