402224231989 has 2 divisors, whose sum is σ = 402224231990. Its totient is φ = 402224231988.

The previous prime is 402224231971. The next prime is 402224232013. The reversal of 402224231989 is 989132422204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 354689331364 + 47534900625 = 595558^2 + 218025^2 .

It is a cyclic number.

It is not a de Polignac number, because 402224231989 - 2⁵ = 402224231957 is a prime.

It is a super-2 number, since 2×402224231989² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402224231939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201112115994 + 201112115995.

It is an arithmetic number, because the mean of its divisors is an integer number (201112115995).

Almost surely, 2^402224231989 is an apocalyptic number.

It is an amenable number.

402224231989 is a deficient number, since it is larger than the sum of its proper divisors (1).

402224231989 is an equidigital number, since it uses as much as digits as its factorization.

402224231989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 46.

The spelling of 402224231989 in words is "four hundred two billion, two hundred twenty-four million, two hundred thirty-one thousand, nine hundred eighty-nine".