1080009 has 36 divisors (see below), whose sum is σ = 1896960. Its totient is φ = 589680.
The previous prime is 1080007. The next prime is 1080029. The reversal of 1080009 is 9000801.
It is not a de Polignac number, because 1080009 - 21 = 1080007 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 1079973 and 1080000.
It is not an unprimeable number, because it can be changed into a prime (1080007) by changing a digit.
It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 13632 + ... + 13710.
21080009 is an apocalyptic number.
It is an amenable number.
1080009 is a deficient number, since it is larger than the sum of its proper divisors (816951).
1080009 is a wasteful number, since it uses less digits than its factorization.
1080009 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 130 (or 120 counting only the distinct ones).
The product of its (nonzero) digits is 72, while the sum is 18.
The square root of 1080009 is about 1039.2348146593. The cubic root of 1080009 is about 102.5988417958.
The spelling of 1080009 in words is "one million, eighty thousand, nine".
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