10989965 has 24 divisors (see below), whose sum is σ = 15846912. Its totient is φ = 7287840.

The previous prime is 10989959. The next prime is 10989967. The reversal of 10989965 is 56998901.

10989965 = T₁₂₀₃ + T₁₂₀₄ + ... + T₁₂₁₇.

It is not a de Polignac number, because 10989965 - 2¹² = 10985869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10989967) 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 23 ways as a sum of consecutive naturals, for example, 6872 + ... + 8318.

It is an arithmetic number, because the mean of its divisors is an integer number (660288).

Almost surely, 2^10989965 is an apocalyptic number.

It is an amenable number.

10989965 is a deficient number, since it is larger than the sum of its proper divisors (4856947).

10989965 is a wasteful number, since it uses less digits than its factorization.

10989965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1497 (or 1490 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 47.

The square root of 10989965 is about 3315.1116119974. Note that the first 3 decimals coincide. The cubic root of 10989965 is about 222.3303592683.

The spelling of 10989965 in words is "ten million, nine hundred eighty-nine thousand, nine hundred sixty-five".