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88999999 = 1147172147
BaseRepresentation
bin1010100111000…
…00100000111111
320012110200001021
411103200200333
5140240444444
612455325011
72130326134
oct523404077
9205420037
1088999999
1146269020
1225980767
1315591a2a
14bb6a58b
157c30584
hex54e083f

88999999 has 8 divisors (see below), whose sum is σ = 99157248. Its totient is φ = 79187160.

The previous prime is 88999979. The next prime is 89000027. The reversal of 88999999 is 99999988.

It can be divided in two parts, 889999 and 99, that added together give a palindrome (890098).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 88999999 - 29 = 88999487 is a prime.

It is a Duffinian number.

88999999 is a modest number, since divided by 9999 gives 8899 as remainder.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88999979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85557 + ... + 86590.

It is an arithmetic number, because the mean of its divisors is an integer number (12394656).

Almost surely, 288999999 is an apocalyptic number.

88999999 is a deficient number, since it is larger than the sum of its proper divisors (10157249).

88999999 is a wasteful number, since it uses less digits than its factorization.

88999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172205.

The product of its digits is 34012224, while the sum is 70.

The square root of 88999999 is about 9433.9810790567. The cubic root of 88999999 is about 446.4745078863.

The spelling of 88999999 in words is "eighty-eight million, nine hundred ninety-nine thousand, nine hundred ninety-nine".

Divisors: 1 11 47 517 172147 1893617 8090909 88999999