10939509 has 16 divisors (see below), whose sum is σ = 18522240. Its totient is φ = 6251040.

The previous prime is 10939507. The next prime is 10939519. The reversal of 10939509 is 90593901.

It is not a de Polignac number, because 10939509 - 2¹ = 10939507 is a prime.

It is a super-2 number, since 2×10939509² = 239345714322162, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10939507) 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, 28752 + ... + 29129.

It is an arithmetic number, because the mean of its divisors is an integer number (1157640).

Almost surely, 2^10939509 is an apocalyptic number.

It is an amenable number.

10939509 is a deficient number, since it is larger than the sum of its proper divisors (7582731).

10939509 is an equidigital number, since it uses as much as digits as its factorization.

10939509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57897 (or 57891 counting only the distinct ones).

The product of its (nonzero) digits is 10935, while the sum is 36.

The square root of 10939509 is about 3307.4928571351. The cubic root of 10939509 is about 221.9895904542.

The spelling of 10939509 in words is "ten million, nine hundred thirty-nine thousand, five hundred nine".