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9000389 = 73139887
BaseRepresentation
bin100010010101…
…010111000101
3121221021012202
4202111113011
54301003024
6520524245
7136334126
oct42252705
917837182
109000389
115098142
123020685
131b31898
1412a404d
15bcbbae
hex8955c5

9000389 has 8 divisors (see below), whose sum is σ = 9199680. Its totient is φ = 8803296.

The previous prime is 9000379. The next prime is 9000403. The reversal of 9000389 is 9830009.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-9000389 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9000349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9704 + ... + 10590.

It is an arithmetic number, because the mean of its divisors is an integer number (1149960).

Almost surely, 29000389 is an apocalyptic number.

It is an amenable number.

9000389 is a deficient number, since it is larger than the sum of its proper divisors (199291).

9000389 is a wasteful number, since it uses less digits than its factorization.

9000389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 9000389 is about 3000.0648326328. The cubic root of 9000389 is about 208.0113791235.

The spelling of 9000389 in words is "nine million, three hundred eighty-nine", and thus it is an aban number.

Divisors: 1 73 139 887 10147 64751 123293 9000389