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8199953 = 291571801
BaseRepresentation
bin11111010001111100010001
3120102121012222
4133101330101
54044344303
6451430425
7126461366
oct37217421
916377188
108199953
1146a0823
1228b5415
131911458
14113646d
15abe938
hex7d1f11

8199953 has 8 divisors (see below), whose sum is σ = 8541480. Its totient is φ = 7862400.

The previous prime is 8199943. The next prime is 8199979. The reversal of 8199953 is 3599918.

It can be written as a sum of positive squares in 4 ways, for example, as 66049 + 8133904 = 257^2 + 2852^2 .

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 8199953 - 214 = 8183569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8199913) 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, 3653 + ... + 5453.

It is an arithmetic number, because the mean of its divisors is an integer number (1067685).

Almost surely, 28199953 is an apocalyptic number.

It is an amenable number.

8199953 is a deficient number, since it is larger than the sum of its proper divisors (341527).

8199953 is a wasteful number, since it uses less digits than its factorization.

8199953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1987.

The product of its digits is 87480, while the sum is 44.

The square root of 8199953 is about 2863.5560060875. The cubic root of 8199953 is about 201.6525822491.

The spelling of 8199953 in words is "eight million, one hundred ninety-nine thousand, nine hundred fifty-three".

Divisors: 1 29 157 1801 4553 52229 282757 8199953