1009666943 has 8 divisors (see below), whose sum is σ = 1034888400. Its totient is φ = 984473920.

The previous prime is 1009666921. The next prime is 1009666951. The reversal of 1009666943 is 3496669001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1009666943 - 2¹² = 1009662847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1009666894 and 1009666903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009666913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77033 + ... + 89181.

It is an arithmetic number, because the mean of its divisors is an integer number (129361050).

Almost surely, 2^1009666943 is an apocalyptic number.

1009666943 is a deficient number, since it is larger than the sum of its proper divisors (25221457).

1009666943 is a wasteful number, since it uses less digits than its factorization.

1009666943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14217.

The product of its (nonzero) digits is 209952, while the sum is 44.

The square root of 1009666943 is about 31775.2567731561. The cubic root of 1009666943 is about 1003.2119864306.

The spelling of 1009666943 in words is "one billion, nine million, six hundred sixty-six thousand, nine hundred forty-three".