10539009 has 30 divisors (see below), whose sum is σ = 16893786. Its totient is φ = 6327360.

The previous prime is 10539007. The next prime is 10539013. The reversal of 10539009 is 90093501.

10539009 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 10400625 + 138384 = 3225^2 + 372^2 .

It is not a de Polignac number, because 10539009 - 2¹ = 10539007 is a prime.

It is a super-2 number, since 2×10539009² = 222141421404162, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10539007) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 257029 + ... + 257069.

It is a Proth number, since it is equal to 2573 ⋅ 2¹² + 1 and 2573 < 2¹².

Almost surely, 2^10539009 is an apocalyptic number.

It is an amenable number.

10539009 is a deficient number, since it is larger than the sum of its proper divisors (6354777).

10539009 is an frugal number, since it uses more digits than its factorization.

10539009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 1215, while the sum is 27.

The square root of 10539009 is about 3246.3839883785. The cubic root of 10539009 is about 219.2467975212.

The spelling of 10539009 in words is "ten million, five hundred thirty-nine thousand, nine".