9408138 has 16 divisors (see below), whose sum is σ = 19325280. Its totient is φ = 3051216.

The previous prime is 9408137. The next prime is 9408143. The reversal of 9408138 is 8318049.

9408138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 9408099 and 9408108.

It is not an unprimeable number, because it can be changed into a prime (9408137) 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, 20968 + ... + 21411.

It is an arithmetic number, because the mean of its divisors is an integer number (1207830).

Almost surely, 2^9408138 is an apocalyptic number.

9408138 is an abundant number, since it is smaller than the sum of its proper divisors (9917142).

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

9408138 is a wasteful number, since it uses less digits than its factorization.

9408138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42421.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 9408138 is about 3067.2688176943. The cubic root of 9408138 is about 211.1063157011.

The spelling of 9408138 in words is "nine million, four hundred eight thousand, one hundred thirty-eight".