10869309 has 30 divisors (see below), whose sum is σ = 17863230. Its totient is φ = 6581520.

The previous prime is 10869289. The next prime is 10869323. The reversal of 10869309 is 90396801.

It can be written as a sum of positive squares in only one way, i.e., 6125625 + 4743684 = 2475^2 + 2178^2 .

It is not a de Polignac number, because 10869309 - 2⁵ = 10869277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10869109) 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, 9247 + ... + 10355.

It is an arithmetic number, because the mean of its divisors is an integer number (595441).

Almost surely, 2^10869309 is an apocalyptic number.

It is an amenable number.

10869309 is a deficient number, since it is larger than the sum of its proper divisors (6993921).

10869309 is a wasteful number, since it uses less digits than its factorization.

10869309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143 (or 1123 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 10869309 is about 3296.8635094586. The cubic root of 10869309 is about 221.5137274570.

The spelling of 10869309 in words is "ten million, eight hundred sixty-nine thousand, three hundred nine".