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10001009 is a prime number
BaseRepresentation
bin100110001001…
…101001110001
3200211002210202
4212021221301
510030013014
6554204545
7151002314
oct46115161
920732722
1010001009
1157109a7
123423755
1320c2175
14148497b
15d283de
hex989a71

10001009 has 2 divisors, whose sum is σ = 10001010. Its totient is φ = 10001008.

The previous prime is 10000993. The next prime is 10001053. The reversal of 10001009 is 90010001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9591409 + 409600 = 3097^2 + 640^2 .

It is an emirp because it is prime and its reverse (90010001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10001009 - 24 = 10000993 is a prime.

It is not a weakly prime, because it can be changed into another prime (10001209) 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 as a sum of consecutive naturals, namely, 5000504 + 5000505.

It is an arithmetic number, because the mean of its divisors is an integer number (5000505).

Almost surely, 210001009 is an apocalyptic number.

It is an amenable number.

10001009 is a deficient number, since it is larger than the sum of its proper divisors (1).

10001009 is an equidigital number, since it uses as much as digits as its factorization.

10001009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9, while the sum is 11.

The square root of 10001009 is about 3162.4371930522. The cubic root of 10001009 is about 215.4507148415.

The spelling of 10001009 in words is "ten million, one thousand, nine".