9381641 has 4 divisors (see below), whose sum is σ = 9387792. Its totient is φ = 9375492.

The previous prime is 9381607. The next prime is 9381643. The reversal of 9381641 is 1461839.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1461839 = 149 ⋅9811.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9381641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9381598 and 9381607.

It is not an unprimeable number, because it can be changed into a prime (9381643) 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 3 ways as a sum of consecutive naturals, for example, 1130 + ... + 4476.

It is an arithmetic number, because the mean of its divisors is an integer number (2346948).

Almost surely, 2^9381641 is an apocalyptic number.

It is an amenable number.

9381641 is a deficient number, since it is larger than the sum of its proper divisors (6151).

9381641 is a wasteful number, since it uses less digits than its factorization.

9381641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6150.

The product of its digits is 5184, while the sum is 32.

The square root of 9381641 is about 3062.9464572532. The cubic root of 9381641 is about 210.9079433411.

The spelling of 9381641 in words is "nine million, three hundred eighty-one thousand, six hundred forty-one".