10899909 has 12 divisors (see below), whose sum is σ = 15786316. Its totient is φ = 7247232.

The previous prime is 10899887. The next prime is 10899929. The reversal of 10899909 is 90999801.

It can be written as a sum of positive squares in 2 ways, for example, as 4397409 + 6502500 = 2097^2 + 2550^2 .

It is not a de Polignac number, because 10899909 - 2⁷ = 10899781 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10899929) 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, 2499 + ... + 5295.

Almost surely, 2^10899909 is an apocalyptic number.

It is an amenable number.

10899909 is a deficient number, since it is larger than the sum of its proper divisors (4886407).

10899909 is a wasteful number, since it uses less digits than its factorization.

10899909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3236 (or 3233 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 45.

The square root of 10899909 is about 3301.5010222624. The cubic root of 10899909 is about 221.7214060704.

The spelling of 10899909 in words is "ten million, eight hundred ninety-nine thousand, nine hundred nine".