9138307 has 4 divisors (see below), whose sum is σ = 9149760. Its totient is φ = 9126856.

The previous prime is 9138293. The next prime is 9138323. The reversal of 9138307 is 7038319.

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 9138307 - 2⁷ = 9138179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9138347) 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, 4432 + ... + 6157.

It is an arithmetic number, because the mean of its divisors is an integer number (2287440).

Almost surely, 2^9138307 is an apocalyptic number.

9138307 is a deficient number, since it is larger than the sum of its proper divisors (11453).

9138307 is a wasteful number, since it uses less digits than its factorization.

9138307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11452.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 9138307 is about 3022.9632812854. The cubic root of 9138307 is about 209.0684894160.

The spelling of 9138307 in words is "nine million, one hundred thirty-eight thousand, three hundred seven".