9930321801 has 27 divisors (see below), whose sum is σ = 14616996589. Its totient is φ = 6496447992.

The previous prime is 9930321799. The next prime is 9930321827. The reversal of 9930321801 is 1081230399.

The square root of 9930321801 is 99651.

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

It is not a de Polignac number, because 9930321801 - 2¹ = 9930321799 is a prime.

It is a super-2 number, since 2×9930321801² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9930321881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 17637946 + ... + 17638508.

Almost surely, 2^9930321801 is an apocalyptic number.

9930321801 is the 99651-st square number.

9930321801 is the 49826-th centered octagonal number.

It is an amenable number.

9930321801 is a deficient number, since it is larger than the sum of its proper divisors (4686674788).

9930321801 is an frugal number, since it uses more digits than its factorization.

9930321801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250 (or 625 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The cubic root of 9930321801 is about 2149.4191184291.

Multiplying 9930321801 by its sum of digits (36), we get a square (357491584836 = 597906²).

Multiplying 9930321801 by its product of nonzero digits (11664), we get a square (115827273486864 = 10762308²).

It can be divided in two parts, 99303 and 21801, that added together give a square (121104 = 348²).

The spelling of 9930321801 in words is "nine billion, nine hundred thirty million, three hundred twenty-one thousand, eight hundred one".