9428129 has 2 divisors, whose sum is σ = 9428130. Its totient is φ = 9428128.

The previous prime is 9428119. The next prime is 9428131. The reversal of 9428129 is 9218249.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6115729 + 3312400 = 2473^2 + 1820^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9428129 is a prime.

Together with 9428131, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9428119) 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 as a sum of consecutive naturals, namely, 4714064 + 4714065.

It is an arithmetic number, because the mean of its divisors is an integer number (4714065).

Almost surely, 2^9428129 is an apocalyptic number.

It is an amenable number.

9428129 is a deficient number, since it is larger than the sum of its proper divisors (1).

9428129 is an equidigital number, since it uses as much as digits as its factorization.

9428129 is an odious number, because the sum of its binary digits is odd.

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

The square root of 9428129 is about 3070.5258507298. The cubic root of 9428129 is about 211.2557338873.

The spelling of 9428129 in words is "nine million, four hundred twenty-eight thousand, one hundred twenty-nine".