9966531929 has 4 divisors (see below), whose sum is σ = 10010437584. Its totient is φ = 9922626276.

The previous prime is 9966531923. The next prime is 9966531931. The reversal of 9966531929 is 9291356699.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9966531929 is a prime.

It is a super-2 number, since 2×9966531929² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9966531923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21952487 + ... + 21952940.

It is an arithmetic number, because the mean of its divisors is an integer number (2502609396).

Almost surely, 2^9966531929 is an apocalyptic number.

It is an amenable number.

9966531929 is a deficient number, since it is larger than the sum of its proper divisors (43905655).

9966531929 is a wasteful number, since it uses less digits than its factorization.

9966531929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43905654.

The product of its digits is 7085880, while the sum is 59.

The square root of 9966531929 is about 99832.5193962368. The cubic root of 9966531929 is about 2152.0285112543.

The spelling of 9966531929 in words is "nine billion, nine hundred sixty-six million, five hundred thirty-one thousand, nine hundred twenty-nine".