Base | Representation |
---|---|
bin | 1011111010110… |
… | …10111110101101 |
3 | 20222010212220001 |
4 | 11331122332231 |
5 | 201044043443 |
6 | 13531024301 |
7 | 2322610243 |
oct | 575327655 |
9 | 228125801 |
10 | 99987373 |
11 | 51492aa2 |
12 | 2959b091 |
13 | 1793ab35 |
14 | d3ca793 |
15 | 8ba0d4d |
hex | 5f5afad |
99987373 has 2 divisors, whose sum is σ = 99987374. Its totient is φ = 99987372.
The previous prime is 99987343. The next prime is 99987449. The reversal of 99987373 is 37378999.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 82119844 + 17867529 = 9062^2 + 4227^2 .
It is a cyclic number.
It is not a de Polignac number, because 99987373 - 213 = 99979181 is a prime.
It is a super-2 number, since 2×999873732 = 19994949518882258, which contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (99987313) 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 as a sum of consecutive naturals, namely, 49993686 + 49993687.
It is an arithmetic number, because the mean of its divisors is an integer number (49993687).
Almost surely, 299987373 is an apocalyptic number.
It is an amenable number.
99987373 is a deficient number, since it is larger than the sum of its proper divisors (1).
99987373 is an equidigital number, since it uses as much as digits as its factorization.
99987373 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 2571912, while the sum is 55.
The square root of 99987373 is about 9999.3686300686. The cubic root of 99987373 is about 464.1393460915.
It can be divided in two parts, 9998 and 7373, that added together give a palindrome (17371).
The spelling of 99987373 in words is "ninety-nine million, nine hundred eighty-seven thousand, three hundred seventy-three".
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