9138478 has 8 divisors (see below), whose sum is σ = 13777200. Its totient is φ = 4546080.

The previous prime is 9138463. The next prime is 9138491. The reversal of 9138478 is 8748319.

9138478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 9138478.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11083 + ... + 11878.

It is an arithmetic number, because the mean of its divisors is an integer number (1722150).

Almost surely, 2^9138478 is an apocalyptic number.

9138478 is a deficient number, since it is larger than the sum of its proper divisors (4638722).

9138478 is a wasteful number, since it uses less digits than its factorization.

9138478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23162.

The product of its digits is 48384, while the sum is 40.

The square root of 9138478 is about 3022.9915646591. The cubic root of 9138478 is about 209.0697934683.

The spelling of 9138478 in words is "nine million, one hundred thirty-eight thousand, four hundred seventy-eight".