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9986005 = 529611129
BaseRepresentation
bin100110000101…
…111111010101
3200210100020001
4212011333111
510024023010
6554011301
7150610501
oct46057725
920710201
109986005
1157006a7
123416b31
1320b83a3
14147d301
15d23c3a
hex985fd5

9986005 has 16 divisors (see below), whose sum is σ = 12610800. Its totient is φ = 7580160.

The previous prime is 9985993. The next prime is 9986023. The reversal of 9986005 is 5006899.

It can be written as a sum of positive squares in 8 ways, for example, as 3236401 + 6749604 = 1799^2 + 2598^2 .

It is not a de Polignac number, because 9986005 - 25 = 9985973 is a prime.

9986005 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8281 + ... + 9409.

It is an arithmetic number, because the mean of its divisors is an integer number (788175).

Almost surely, 29986005 is an apocalyptic number.

It is an amenable number.

9986005 is a deficient number, since it is larger than the sum of its proper divisors (2624795).

9986005 is a wasteful number, since it uses less digits than its factorization.

9986005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 9986005 is about 3160.0640816287. The cubic root of 9986005 is about 215.3429177031.

The spelling of 9986005 in words is "nine million, nine hundred eighty-six thousand, five".

Divisors: 1 5 29 61 145 305 1129 1769 5645 8845 32741 68869 163705 344345 1997201 9986005