9099061321 has 9 divisors (see below), whose sum is σ = 10585399149. Its totient is φ = 7798623084.

The previous prime is 9099061313. The next prime is 9099061327. The reversal of 9099061321 is 1231609909.

The square root of 9099061321 is 95389.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 9099061321 - 2³ = 9099061313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9099061327) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 660910 + ... + 674536.

It is an arithmetic number, because the mean of its divisors is an integer number (1176155461).

Almost surely, 2^9099061321 is an apocalyptic number.

9099061321 is the 95389-th square number.

9099061321 is the 47695-th centered octagonal number.

It is an amenable number.

9099061321 is a deficient number, since it is larger than the sum of its proper divisors (1486337828).

9099061321 is an frugal number, since it uses more digits than its factorization.

9099061321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27268 (or 13634 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 40.

The cubic root of 9099061321 is about 2087.6876909943.

Multiplying 9099061321 by its product of nonzero digits (26244), we get a square (238795765308324 = 15453018²).

The spelling of 9099061321 in words is "nine billion, ninety-nine million, sixty-one thousand, three hundred twenty-one".