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9869889689 = 11897262699
BaseRepresentation
bin10010011000100101…
…01001000010011001
3221110211221100022222
421030102221002121
5130203142432224
64311213553425
7466404451412
oct111422510231
927424840288
109869889689
114205328230
121ab54a5875
13c13a6371a
14698b74809
153cb75bb5e
hex24c4a9099

9869889689 has 4 divisors (see below), whose sum is σ = 10767152400. Its totient is φ = 8972626980.

The previous prime is 9869889671. The next prime is 9869889761.

9869889689 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9869889689 - 28 = 9869889433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9869889619) 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 3 ways as a sum of consecutive naturals, for example, 448631339 + ... + 448631360.

It is an arithmetic number, because the mean of its divisors is an integer number (2691788100).

Almost surely, 29869889689 is an apocalyptic number.

It is an amenable number.

9869889689 is a deficient number, since it is larger than the sum of its proper divisors (897262711).

9869889689 is a wasteful number, since it uses less digits than its factorization.

9869889689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897262710.

The product of its digits is 967458816, while the sum is 80.

The square root of 9869889689 is about 99347.3184791618. The cubic root of 9869889689 is about 2145.0500647769.

The spelling of 9869889689 in words is "nine billion, eight hundred sixty-nine million, eight hundred eighty-nine thousand, six hundred eighty-nine".

Divisors: 1 11 897262699 9869889689