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9000985 = 57257171
BaseRepresentation
bin100010010101…
…100000011001
3121221022000211
4202111200121
54301012420
6520531121
7136335640
oct42254031
917838024
109000985
115098634
123020aa1
131b31c36
1412a4357
15bcbe5a
hex895819

9000985 has 8 divisors (see below), whose sum is σ = 12344256. Its totient is φ = 6172080.

The previous prime is 9000983. The next prime is 9000989. The reversal of 9000985 is 5890009.

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

It is not a de Polignac number, because 9000985 - 21 = 9000983 is a prime.

It is a Duffinian number.

9000985 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9000983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128551 + ... + 128620.

It is an arithmetic number, because the mean of its divisors is an integer number (1543032).

Almost surely, 29000985 is an apocalyptic number.

It is an amenable number.

9000985 is a deficient number, since it is larger than the sum of its proper divisors (3343271).

9000985 is a wasteful number, since it uses less digits than its factorization.

9000985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257183.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 9000985 is about 3000.1641621751. The cubic root of 9000985 is about 208.0159704823.

The spelling of 9000985 in words is "nine million, nine hundred eighty-five", and thus it is an aban number.

Divisors: 1 5 7 35 257171 1285855 1800197 9000985