9138903 has 4 divisors (see below), whose sum is σ = 12185208. Its totient is φ = 6092600.

The previous prime is 9138863. The next prime is 9138917. The reversal of 9138903 is 3098319.

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 9138903 - 2⁶ = 9138839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9138803) 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, 1523148 + ... + 1523153.

It is an arithmetic number, because the mean of its divisors is an integer number (3046302).

Almost surely, 2^9138903 is an apocalyptic number.

9138903 is a deficient number, since it is larger than the sum of its proper divisors (3046305).

9138903 is a wasteful number, since it uses less digits than its factorization.

9138903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3046304.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 9138903 is about 3023.0618584475. The cubic root of 9138903 is about 209.0730344633.

The spelling of 9138903 in words is "nine million, one hundred thirty-eight thousand, nine hundred three".