9136391 has 8 divisors (see below), whose sum is σ = 10088064. Its totient is φ = 8204920.

The previous prime is 9136367. The next prime is 9136417. The reversal of 9136391 is 1936319.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9136391 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9136591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4091 + ... + 5916.

It is an arithmetic number, because the mean of its divisors is an integer number (1261008).

Almost surely, 2^9136391 is an apocalyptic number.

9136391 is a deficient number, since it is larger than the sum of its proper divisors (951673).

9136391 is a wasteful number, since it uses less digits than its factorization.

9136391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10101.

The product of its digits is 4374, while the sum is 32.

The square root of 9136391 is about 3022.6463570851. The cubic root of 9136391 is about 209.0538768179.

The spelling of 9136391 in words is "nine million, one hundred thirty-six thousand, three hundred ninety-one".