8938840 has 32 divisors (see below), whose sum is σ = 20584080. Its totient is φ = 3491712.

The previous prime is 8938823. The next prime is 8938843. The reversal of 8938840 is 488398.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 8938793 and 8938802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8938843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 879 + ... + 4318.

Almost surely, 2^8938840 is an apocalyptic number.

It is an amenable number.

8938840 is an abundant number, since it is smaller than the sum of its proper divisors (11645240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8938840 is a wasteful number, since it uses less digits than its factorization.

8938840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5251 (or 5247 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 8938840 is about 2989.7892902343. The cubic root of 8938840 is about 207.5361334471.

The spelling of 8938840 in words is "eight million, nine hundred thirty-eight thousand, eight hundred forty".