9138263 has 4 divisors (see below), whose sum is σ = 9227088. Its totient is φ = 9049440.

The previous prime is 9138251. The next prime is 9138271. The reversal of 9138263 is 3628319.

9138263 is digitally balanced in base 2 and base 3, because in such bases 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 9138263 - 2⁴ = 9138247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9138293) 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, 44258 + ... + 44463.

It is an arithmetic number, because the mean of its divisors is an integer number (2306772).

Almost surely, 2^9138263 is an apocalyptic number.

9138263 is a deficient number, since it is larger than the sum of its proper divisors (88825).

9138263 is a wasteful number, since it uses less digits than its factorization.

9138263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88824.

The product of its digits is 7776, while the sum is 32.

The square root of 9138263 is about 3022.9560036494. The cubic root of 9138263 is about 209.0681538678.

The spelling of 9138263 in words is "nine million, one hundred thirty-eight thousand, two hundred sixty-three".