9901321 has 8 divisors (see below), whose sum is σ = 10121760. Its totient is φ = 9682752.

The previous prime is 9901313. The next prime is 9901343. The reversal of 9901321 is 1231099.

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 9901321 - 2³ = 9901313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9901391) 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, 16401 + ... + 16993.

It is an arithmetic number, because the mean of its divisors is an integer number (1265220).

Almost surely, 2^9901321 is an apocalyptic number.

It is an amenable number.

9901321 is a deficient number, since it is larger than the sum of its proper divisors (220439).

9901321 is a wasteful number, since it uses less digits than its factorization.

9901321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 9901321 is about 3146.6364581883. The cubic root of 9901321 is about 214.7324669476.

The spelling of 9901321 in words is "nine million, nine hundred one thousand, three hundred twenty-one".