122883989 has 2 divisors, whose sum is σ = 122883990. Its totient is φ = 122883988.

The previous prime is 122883949. The next prime is 122884019. The reversal of 122883989 is 989388221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111661489 + 11222500 = 10567^2 + 3350^2 .

It is an emirp because it is prime and its reverse (989388221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122883989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122883949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61441994 + 61441995.

It is an arithmetic number, because the mean of its divisors is an integer number (61441995).

Almost surely, 2^122883989 is an apocalyptic number.

It is an amenable number.

122883989 is a deficient number, since it is larger than the sum of its proper divisors (1).

122883989 is an equidigital number, since it uses as much as digits as its factorization.

122883989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497664, while the sum is 50.

The square root of 122883989 is about 11085.3050927794. The cubic root of 122883989 is about 497.1625805604.

The spelling of 122883989 in words is "one hundred twenty-two million, eight hundred eighty-three thousand, nine hundred eighty-nine".