9128429 has 4 divisors (see below), whose sum is σ = 9153276. Its totient is φ = 9103584.

The previous prime is 9128419. The next prime is 9128443. The reversal of 9128429 is 9248219.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6135529 + 2992900 = 2477^2 + 1730^2 .

It is a cyclic number.

It is not a de Polignac number, because 9128429 - 2²⁰ = 8079853 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9128419) 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 3 ways as a sum of consecutive naturals, for example, 11864 + ... + 12609.

It is an arithmetic number, because the mean of its divisors is an integer number (2288319).

Almost surely, 2^9128429 is an apocalyptic number.

It is an amenable number.

9128429 is a deficient number, since it is larger than the sum of its proper divisors (24847).

9128429 is a wasteful number, since it uses less digits than its factorization.

9128429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24846.

The product of its digits is 10368, while the sum is 35.

The square root of 9128429 is about 3021.3290122064. The cubic root of 9128429 is about 208.9931317997.

The spelling of 9128429 in words is "nine million, one hundred twenty-eight thousand, four hundred twenty-nine".