122276389 has 2 divisors, whose sum is σ = 122276390. Its totient is φ = 122276388.

The previous prime is 122276333. The next prime is 122276423. The reversal of 122276389 is 983672221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122102500 + 173889 = 11050^2 + 417^2 .

It is a cyclic number.

It is not a de Polignac number, because 122276389 - 2⁹ = 122275877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122276689) 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, 61138194 + 61138195.

It is an arithmetic number, because the mean of its divisors is an integer number (61138195).

Almost surely, 2^122276389 is an apocalyptic number.

It is an amenable number.

122276389 is a deficient number, since it is larger than the sum of its proper divisors (1).

122276389 is an equidigital number, since it uses as much as digits as its factorization.

122276389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 40.

The square root of 122276389 is about 11057.8654811858. The cubic root of 122276389 is about 496.3418193687.

The spelling of 122276389 in words is "one hundred twenty-two million, two hundred seventy-six thousand, three hundred eighty-nine".