Base | Representation |
---|---|
bin | 101001111101001100… |
… | …0001110000100100001 |
3 | 22121120020001011222100 |
4 | 1103322120032010201 |
5 | 2434011044432014 |
6 | 105220311401013 |
7 | 6336522232566 |
oct | 1237230160441 |
9 | 277506034870 |
10 | 90099999009 |
11 | 352361118a9 |
12 | 15566383169 |
13 | 865b7654a7 |
14 | 450a2cc86d |
15 | 2525031009 |
hex | 14fa60e121 |
90099999009 has 12 divisors (see below), whose sum is σ = 136994150800. Its totient is φ = 56905262424.
The previous prime is 90099999007. The next prime is 90099999037.
90099999009 is nontrivially palindromic in base 10.
It is not a de Polignac number, because 90099999009 - 21 = 90099999007 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (90099999007) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 263450119 + ... + 263450460.
Almost surely, 290099999009 is an apocalyptic number.
It is an amenable number.
90099999009 is a deficient number, since it is larger than the sum of its proper divisors (46894151791).
90099999009 is a wasteful number, since it uses less digits than its factorization.
90099999009 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 526900604 (or 526900601 counting only the distinct ones).
The product of its (nonzero) digits is 4782969, while the sum is 63.
The spelling of 90099999009 in words is "ninety billion, ninety-nine million, nine hundred ninety-nine thousand, nine".
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