122279089 has 2 divisors, whose sum is σ = 122279090. Its totient is φ = 122279088.

The previous prime is 122279077. The next prime is 122279141. The reversal of 122279089 is 980972221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67519089 + 54760000 = 8217^2 + 7400^2 .

It is an emirp because it is prime and its reverse (980972221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122279089 is a prime.

It is not a weakly prime, because it can be changed into another prime (122279009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61139544 + 61139545.

It is an arithmetic number, because the mean of its divisors is an integer number (61139545).

Almost surely, 2^122279089 is an apocalyptic number.

It is an amenable number.

122279089 is a deficient number, since it is larger than the sum of its proper divisors (1).

122279089 is an equidigital number, since it uses as much as digits as its factorization.

122279089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 122279089 is about 11057.9875655564. The cubic root of 122279089 is about 496.3454726034.

It can be divided in two parts, 12227 and 9089, that added together give a square (21316 = 146²).

The spelling of 122279089 in words is "one hundred twenty-two million, two hundred seventy-nine thousand, eighty-nine".