9399138 has 32 divisors (see below), whose sum is σ = 22179840. Its totient is φ = 2598480.

The previous prime is 9399133. The next prime is 9399139. The reversal of 9399138 is 8319939.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 9399138.

It is not an unprimeable number, because it can be changed into a prime (9399133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2308 + ... + 4911.

It is an arithmetic number, because the mean of its divisors is an integer number (693120).

Almost surely, 2^9399138 is an apocalyptic number.

9399138 is an abundant number, since it is smaller than the sum of its proper divisors (12780702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9399138 is a wasteful number, since it uses less digits than its factorization.

9399138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7262.

The product of its digits is 52488, while the sum is 42.

The square root of 9399138 is about 3065.8013634285. The cubic root of 9399138 is about 211.0389781468.

The spelling of 9399138 in words is "nine million, three hundred ninety-nine thousand, one hundred thirty-eight".