10689909 has 4 divisors (see below), whose sum is σ = 14253216. Its totient is φ = 7126604.

The previous prime is 10689907. The next prime is 10689911. The reversal of 10689909 is 90998601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90998601 = 3 ⋅30332867.

It is an interprime number because it is at equal distance from previous prime (10689907) and next prime (10689911).

It is a cyclic number.

It is not a de Polignac number, because 10689909 - 2¹ = 10689907 is a prime.

It is a super-2 number, since 2×10689909² = 228548308856562, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10689907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1781649 + ... + 1781654.

It is an arithmetic number, because the mean of its divisors is an integer number (3563304).

Almost surely, 2^10689909 is an apocalyptic number.

It is an amenable number.

10689909 is a deficient number, since it is larger than the sum of its proper divisors (3563307).

10689909 is an equidigital number, since it uses as much as digits as its factorization.

10689909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3563306.

The product of its (nonzero) digits is 34992, while the sum is 42.

The square root of 10689909 is about 3269.5426285644. The cubic root of 10689909 is about 220.2882516343.

The spelling of 10689909 in words is "ten million, six hundred eighty-nine thousand, nine hundred nine".