9721141 has 8 divisors (see below), whose sum is σ = 10483200. Its totient is φ = 8984160.

The previous prime is 9721133. The next prime is 9721147. The reversal of 9721141 is 1411279.

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

It is a cyclic number.

It is not a de Polignac number, because 9721141 - 2³ = 9721133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9721147) 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, 5461 + ... + 7018.

It is an arithmetic number, because the mean of its divisors is an integer number (1310400).

Almost surely, 2^9721141 is an apocalyptic number.

It is an amenable number.

9721141 is a deficient number, since it is larger than the sum of its proper divisors (762059).

9721141 is a wasteful number, since it uses less digits than its factorization.

9721141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12539.

The product of its digits is 504, while the sum is 25.

The square root of 9721141 is about 3117.8744362145. The cubic root of 9721141 is about 213.4219485914.

The spelling of 9721141 in words is "nine million, seven hundred twenty-one thousand, one hundred forty-one".