320009429 has 2 divisors, whose sum is σ = 320009430. Its totient is φ = 320009428.

The previous prime is 320009413. The next prime is 320009441. The reversal of 320009429 is 924900023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 268140625 + 51868804 = 16375^2 + 7202^2 .

It is a cyclic number.

It is not a de Polignac number, because 320009429 - 2⁴ = 320009413 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320009449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160004714 + 160004715.

It is an arithmetic number, because the mean of its divisors is an integer number (160004715).

Almost surely, 2^320009429 is an apocalyptic number.

It is an amenable number.

320009429 is a deficient number, since it is larger than the sum of its proper divisors (1).

320009429 is an equidigital number, since it uses as much as digits as its factorization.

320009429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 320009429 is about 17888.8073666189. The cubic root of 320009429 is about 683.9970966727.

The spelling of 320009429 in words is "three hundred twenty million, nine thousand, four hundred twenty-nine".