122445779 has 2 divisors, whose sum is σ = 122445780. Its totient is φ = 122445778.

The previous prime is 122445769. The next prime is 122445797. The reversal of 122445779 is 977544221.

Together with next prime (122445797) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122445779 - 2⁸ = 122445523 is a prime.

It is a Chen prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (122445769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61222889 + 61222890.

It is an arithmetic number, because the mean of its divisors is an integer number (61222890).

Almost surely, 2^122445779 is an apocalyptic number.

122445779 is a deficient number, since it is larger than the sum of its proper divisors (1).

122445779 is an equidigital number, since it uses as much as digits as its factorization.

122445779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 41.

The square root of 122445779 is about 11065.5220843845. The cubic root of 122445779 is about 496.5709084240.

The spelling of 122445779 in words is "one hundred twenty-two million, four hundred forty-five thousand, seven hundred seventy-nine".