402329 has 2 divisors, whose sum is σ = 402330. Its totient is φ = 402328.

The previous prime is 402313. The next prime is 402331. The reversal of 402329 is 923204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204304 + 198025 = 452^2 + 445^2 .

It is a cyclic number.

It is not a de Polignac number, because 402329 - 2⁴ = 402313 is a prime.

Together with 402331, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 402329.

It is not a weakly prime, because it can be changed into another prime (402359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201164 + 201165.

It is an arithmetic number, because the mean of its divisors is an integer number (201165).

2⁴⁰²³²⁹ is an apocalyptic number.

It is an amenable number.

402329 is a deficient number, since it is larger than the sum of its proper divisors (1).

402329 is an equidigital number, since it uses as much as digits as its factorization.

402329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 402329 is about 634.2940958262. The cubic root of 402329 is about 73.8233551471.

The spelling of 402329 in words is "four hundred two thousand, three hundred twenty-nine".