9621991141 has 8 divisors (see below), whose sum is σ = 11351289344. Its totient is φ = 7981374960.

The previous prime is 9621991111. The next prime is 9621991163. The reversal of 9621991141 is 1411991269.

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 9621991141 - 2²⁵ = 9588436709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9621991111) 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, 22170270 + ... + 22170703.

It is an arithmetic number, because the mean of its divisors is an integer number (1418911168).

Almost surely, 2^9621991141 is an apocalyptic number.

It is an amenable number.

9621991141 is a deficient number, since it is larger than the sum of its proper divisors (1729298203).

9621991141 is a wasteful number, since it uses less digits than its factorization.

9621991141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44341011.

The product of its digits is 34992, while the sum is 43.

The square root of 9621991141 is about 98091.7485877380. The cubic root of 9621991141 is about 2126.9387531511.

The spelling of 9621991141 in words is "nine billion, six hundred twenty-one million, nine hundred ninety-one thousand, one hundred forty-one".