9996129 has 40 divisors (see below), whose sum is σ = 17563392. Its totient is φ = 5585760.

The previous prime is 9996089. The next prime is 9996137. The reversal of 9996129 is 9216999.

It is a happy number.

It is not a de Polignac number, because 9996129 - 2⁷ = 9996001 is a prime.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (9996139) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 11152 + ... + 12014.

Almost surely, 2^9996129 is an apocalyptic number.

9996129 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

It is an amenable number.

9996129 is a deficient number, since it is larger than the sum of its proper divisors (7567263).

9996129 is a wasteful number, since it uses less digits than its factorization.

9996129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899 (or 890 counting only the distinct ones).

The product of its digits is 78732, while the sum is 45.

The square root of 9996129 is about 3161.6655420838. The cubic root of 9996129 is about 215.4156660264.

The spelling of 9996129 in words is "nine million, nine hundred ninety-six thousand, one hundred twenty-nine".