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30000489999 = 310000163333
BaseRepresentation
bin11011111100001010…
…110010011000001111
32212102210012210112020
4123330022302120033
5442420111134444
621440530341223
72111303646264
oct337412623017
985383183466
1030000489999
11117a5549197
12599312a813
132aa150713c
14164853526b
15ba8bc4119
hex6fc2b260f

30000489999 has 4 divisors (see below), whose sum is σ = 40000653336. Its totient is φ = 20000326664.

The previous prime is 30000489997. The next prime is 30000490129. The reversal of 30000489999 is 99998400003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99998400003 = 333332800001.

It is a cyclic number.

It is not a de Polignac number, because 30000489999 - 21 = 30000489997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30000489991) 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 3 ways as a sum of consecutive naturals, for example, 5000081664 + ... + 5000081669.

It is an arithmetic number, because the mean of its divisors is an integer number (10000163334).

Almost surely, 230000489999 is an apocalyptic number.

30000489999 is a deficient number, since it is larger than the sum of its proper divisors (10000163337).

30000489999 is a wasteful number, since it uses less digits than its factorization.

30000489999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10000163336.

The product of its (nonzero) digits is 629856, while the sum is 51.

The spelling of 30000489999 in words is "thirty billion, four hundred eighty-nine thousand, nine hundred ninety-nine".

Divisors: 1 3 10000163333 30000489999