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9988303423 = 72691294997
BaseRepresentation
bin10010100110101100…
…10110101000111111
3221210002202101102211
421103112112220333
5130424001202143
64331044001251
7502343115100
oct112326265077
927702671384
109988303423
11426615621a
121b29090227
13c32453617
146aa79a3a7
153d6d4c49d
hex253596a3f

9988303423 has 12 divisors (see below), whose sum is σ = 11635901112. Its totient is φ = 8548984080.

The previous prime is 9988303397. The next prime is 9988303537. The reversal of 9988303423 is 3243038899.

It is not a de Polignac number, because 9988303423 - 29 = 9988302911 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is the 99942-nd Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9988303223) by changing a digit.

It is a nontrivial repunit in base 99941.

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 11 ways as a sum of consecutive naturals, for example, 113640 + ... + 181357.

It is an arithmetic number, because the mean of its divisors is an integer number (969658426).

Almost surely, 29988303423 is an apocalyptic number.

9988303423 is a deficient number, since it is larger than the sum of its proper divisors (1647597689).

9988303423 is a wasteful number, since it uses less digits than its factorization.

9988303423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295702 (or 295695 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 49.

The square root of 9988303423 is about 99941.5000037522. The cubic root of 9988303423 is about 2153.5943786130.

The spelling of 9988303423 in words is "nine billion, nine hundred eighty-eight million, three hundred three thousand, four hundred twenty-three".

Divisors: 1 7 49 691 4837 33859 294997 2064979 14454853 203842927 1426900489 9988303423