9891541 has 8 divisors (see below), whose sum is σ = 11260224. Its totient is φ = 8601120.

The previous prime is 9891517. The next prime is 9891551. The reversal of 9891541 is 1451989.

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

It is not a de Polignac number, because 9891541 - 2⁹ = 9891029 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9891541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9891551) 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, 19296 + ... + 19801.

It is an arithmetic number, because the mean of its divisors is an integer number (1407528).

Almost surely, 2^9891541 is an apocalyptic number.

It is an amenable number.

9891541 is a deficient number, since it is larger than the sum of its proper divisors (1368683).

9891541 is a wasteful number, since it uses less digits than its factorization.

9891541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39131.

The product of its digits is 12960, while the sum is 37.

The square root of 9891541 is about 3145.0820339063. The cubic root of 9891541 is about 214.6617432076.

The spelling of 9891541 in words is "nine million, eight hundred ninety-one thousand, five hundred forty-one".