402322229 has 2 divisors, whose sum is σ = 402322230. Its totient is φ = 402322228.

The previous prime is 402322171. The next prime is 402322231. The reversal of 402322229 is 922223204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 350812900 + 51509329 = 18730^2 + 7177^2 .

It is a cyclic number.

It is not a de Polignac number, because 402322229 - 2⁸ = 402321973 is a prime.

Together with 402322231, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 402322198 and 402322207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402322259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201161114 + 201161115.

It is an arithmetic number, because the mean of its divisors is an integer number (201161115).

Almost surely, 2^402322229 is an apocalyptic number.

It is an amenable number.

402322229 is a deficient number, since it is larger than the sum of its proper divisors (1).

402322229 is an equidigital number, since it uses as much as digits as its factorization.

402322229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 402322229 is about 20057.9717070296. The cubic root of 402322229 is about 738.2294100779.

The spelling of 402322229 in words is "four hundred two million, three hundred twenty-two thousand, two hundred twenty-nine".