10689949 has 4 divisors (see below), whose sum is σ = 10736860. Its totient is φ = 10643040.

The previous prime is 10689911. The next prime is 10689961. The reversal of 10689949 is 94998601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10432900 + 257049 = 3230^2 + 507^2 .

It is a cyclic number.

It is not a de Polignac number, because 10689949 - 2¹³ = 10681757 is a prime.

It is a super-2 number, since 2×10689949² = 228550019245202, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10689899 and 10689908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10689979) 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, 23112 + ... + 23569.

It is an arithmetic number, because the mean of its divisors is an integer number (2684215).

Almost surely, 2^10689949 is an apocalyptic number.

It is an amenable number.

10689949 is a deficient number, since it is larger than the sum of its proper divisors (46911).

10689949 is an equidigital number, since it uses as much as digits as its factorization.

10689949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46910.

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 10689949 is about 3269.5487456222. The cubic root of 10689949 is about 220.2885263956.

The spelling of 10689949 in words is "ten million, six hundred eighty-nine thousand, nine hundred forty-nine".