322438861 has 2 divisors, whose sum is σ = 322438862. Its totient is φ = 322438860.

The previous prime is 322438859. The next prime is 322438871. The reversal of 322438861 is 168834223.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 231617961 + 90820900 = 15219^2 + 9530^2 .

It is a cyclic number.

It is not a de Polignac number, because 322438861 - 2¹ = 322438859 is a prime.

Together with 322438859, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 322438861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (322438841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161219430 + 161219431.

It is an arithmetic number, because the mean of its divisors is an integer number (161219431).

Almost surely, 2^322438861 is an apocalyptic number.

It is an amenable number.

322438861 is a deficient number, since it is larger than the sum of its proper divisors (1).

322438861 is an equidigital number, since it uses as much as digits as its factorization.

322438861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55296, while the sum is 37.

The square root of 322438861 is about 17956.5826648614. The cubic root of 322438861 is about 685.7236467865.

The spelling of 322438861 in words is "three hundred twenty-two million, four hundred thirty-eight thousand, eight hundred sixty-one".