9138623 has 8 divisors (see below), whose sum is σ = 9981216. Its totient is φ = 8316000.

The previous prime is 9138607. The next prime is 9138637. The reversal of 9138623 is 3268319.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9138623 - 2⁴ = 9138607 is a prime.

It is a super-2 number, since 2×9138623² = 167028860672258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9138623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9138323) 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, 4028 + ... + 5873.

It is an arithmetic number, because the mean of its divisors is an integer number (1247652).

Almost surely, 2^9138623 is an apocalyptic number.

9138623 is a deficient number, since it is larger than the sum of its proper divisors (842593).

9138623 is a wasteful number, since it uses less digits than its factorization.

9138623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9985.

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

The square root of 9138623 is about 3023.0155474294. The cubic root of 9138623 is about 209.0708992308.

The spelling of 9138623 in words is "nine million, one hundred thirty-eight thousand, six hundred twenty-three".