9138868 has 12 divisors (see below), whose sum is σ = 16333632. Its totient is φ = 4472120.

The previous prime is 9138863. The next prime is 9138917. The reversal of 9138868 is 8688319.

It is a happy number.

9138868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9138863) 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, 24118 + ... + 24493.

It is an arithmetic number, because the mean of its divisors is an integer number (1361136).

Almost surely, 2^9138868 is an apocalyptic number.

It is an amenable number.

9138868 is a deficient number, since it is larger than the sum of its proper divisors (7194764).

9138868 is a wasteful number, since it uses less digits than its factorization.

9138868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48662 (or 48660 counting only the distinct ones).

The product of its digits is 82944, while the sum is 43.

The square root of 9138868 is about 3023.0560696090. The cubic root of 9138868 is about 209.0727675616.

The spelling of 9138868 in words is "nine million, one hundred thirty-eight thousand, eight hundred sixty-eight".