1010009 has 16 divisors (see below), whose sum is σ = 1357440. Its totient is φ = 725760.
The previous prime is 1010003. The next prime is 1010033. The reversal of 1010009 is 9000101.
1010009 = 2982 + 2992 + ... + 3082.
It is not a de Polignac number, because 1010009 - 24 = 1009993 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (11).
It is a Curzon number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1010003) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 497 + ... + 1505.
It is an arithmetic number, because the mean of its divisors is an integer number (84840).
21010009 is an apocalyptic number.
It is an amenable number.
1010009 is a deficient number, since it is larger than the sum of its proper divisors (347431).
1010009 is a wasteful number, since it uses less digits than its factorization.
1010009 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1040.
The product of its (nonzero) digits is 9, while the sum is 11.
The square root of 1010009 is about 1004.9920397695. The cubic root of 1010009 is about 100.3325263698.
1010009 divided by its sum of digits (11) gives a palindrome (91819).
The spelling of 1010009 in words is "one million, ten thousand, nine".
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