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90099999009 = 3219526900579
BaseRepresentation
bin101001111101001100…
…0001110000100100001
322121120020001011222100
41103322120032010201
52434011044432014
6105220311401013
76336522232566
oct1237230160441
9277506034870
1090099999009
11352361118a9
1215566383169
13865b7654a7
14450a2cc86d
152525031009
hex14fa60e121

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".

Divisors: 1 3 9 19 57 171 526900579 1580701737 4742105211 10011111001 30033333003 90099999009