9928429 has 6 divisors (see below), whose sum is σ = 11549454. Its totient is φ = 8510040.

The previous prime is 9928409. The next prime is 9928441. The reversal of 9928429 is 9248299.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 9922500 + 5929 = 3150^2 + 77^2 .

It is not a de Polignac number, because 9928429 - 2⁵ = 9928397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9928409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 101262 + ... + 101359.

It is an arithmetic number, because the mean of its divisors is an integer number (1924909).

Almost surely, 2^9928429 is an apocalyptic number.

It is an amenable number.

9928429 is a deficient number, since it is larger than the sum of its proper divisors (1621025).

9928429 is a wasteful number, since it uses less digits than its factorization.

9928429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202635 (or 202628 counting only the distinct ones).

The product of its digits is 93312, while the sum is 43.

The square root of 9928429 is about 3150.9409705674. The cubic root of 9928429 is about 214.9282544098.

The spelling of 9928429 in words is "nine million, nine hundred twenty-eight thousand, four hundred twenty-nine".