402022289 has 2 divisors, whose sum is σ = 402022290. Its totient is φ = 402022288.

The previous prime is 402022277. The next prime is 402022297. The reversal of 402022289 is 982220204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 376942225 + 25080064 = 19415^2 + 5008^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402022289 is a prime.

It is not a weakly prime, because it can be changed into another prime (402022259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201011144 + 201011145.

It is an arithmetic number, because the mean of its divisors is an integer number (201011145).

Almost surely, 2^402022289 is an apocalyptic number.

It is an amenable number.

402022289 is a deficient number, since it is larger than the sum of its proper divisors (1).

402022289 is an equidigital number, since it uses as much as digits as its factorization.

402022289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 402022289 is about 20050.4934851988. The cubic root of 402022289 is about 738.0459090914.

The spelling of 402022289 in words is "four hundred two million, twenty-two thousand, two hundred eighty-nine".