9138995 has 4 divisors (see below), whose sum is σ = 10966800. Its totient is φ = 7311192.

The previous prime is 9138991. The next prime is 9139021. The reversal of 9138995 is 5998319.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5998319 = 19 ⋅315701.

It is a cyclic number.

It is not a de Polignac number, because 9138995 - 2² = 9138991 is a prime.

It is a super-2 number, since 2×9138995² = 167042459220050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9138991) 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 3 ways as a sum of consecutive naturals, for example, 913895 + ... + 913904.

It is an arithmetic number, because the mean of its divisors is an integer number (2741700).

Almost surely, 2^9138995 is an apocalyptic number.

9138995 is a deficient number, since it is larger than the sum of its proper divisors (1827805).

9138995 is a wasteful number, since it uses less digits than its factorization.

9138995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827804.

The product of its digits is 87480, while the sum is 44.

The square root of 9138995 is about 3023.0770747700. The cubic root of 9138995 is about 209.0737360301.

The spelling of 9138995 in words is "nine million, one hundred thirty-eight thousand, nine hundred ninety-five".