Search a number
-
+
9930005 = 51986001
BaseRepresentation
bin100101111000…
…010100010101
3200200111101222
4211320110111
510020230010
6552500125
7150255311
oct45702425
920614358
109930005
115672618
1233aa645
132098a57
141466b41
15d12355
hex978515

9930005 has 4 divisors (see below), whose sum is σ = 11916012. Its totient is φ = 7944000.

The previous prime is 9930001. The next prime is 9930031. The reversal of 9930005 is 5000399.

9930005 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1274641 + 8655364 = 1129^2 + 2942^2 .

It is not a de Polignac number, because 9930005 - 22 = 9930001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9930001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 992996 + ... + 993005.

It is an arithmetic number, because the mean of its divisors is an integer number (2979003).

Almost surely, 29930005 is an apocalyptic number.

It is an amenable number.

9930005 is a deficient number, since it is larger than the sum of its proper divisors (1986007).

9930005 is a wasteful number, since it uses less digits than its factorization.

9930005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1986006.

The product of its (nonzero) digits is 1215, while the sum is 26.

The square root of 9930005 is about 3151.1910446687. The cubic root of 9930005 is about 214.9396260984.

The spelling of 9930005 in words is "nine million, nine hundred thirty thousand, five".

Divisors: 1 5 1986001 9930005