10638009 has 12 divisors (see below), whose sum is σ = 15416752. Its totient is φ = 7068600.

The previous prime is 10638007. The next prime is 10638031. The reversal of 10638009 is 90083601.

It is not a de Polignac number, because 10638009 - 2¹ = 10638007 is a prime.

It is a super-2 number, since 2×10638009² = 226334470968162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10638007) 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 11 ways as a sum of consecutive naturals, for example, 1194 + ... + 4764.

Almost surely, 2^10638009 is an apocalyptic number.

It is an amenable number.

10638009 is a deficient number, since it is larger than the sum of its proper divisors (4778743).

10638009 is a wasteful number, since it uses less digits than its factorization.

10638009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3908 (or 3905 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 10638009 is about 3261.5960816754. The cubic root of 10638009 is about 219.9311699279.

The spelling of 10638009 in words is "ten million, six hundred thirty-eight thousand, nine".