118922989 has 2 divisors, whose sum is σ = 118922990. Its totient is φ = 118922988.

The previous prime is 118922983. The next prime is 118923011. The reversal of 118922989 is 989229811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83722500 + 35200489 = 9150^2 + 5933^2 .

It is an emirp because it is prime and its reverse (989229811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118922989 - 2⁷ = 118922861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118922983) 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, 59461494 + 59461495.

It is an arithmetic number, because the mean of its divisors is an integer number (59461495).

Almost surely, 2^118922989 is an apocalyptic number.

It is an amenable number.

118922989 is a deficient number, since it is larger than the sum of its proper divisors (1).

118922989 is an equidigital number, since it uses as much as digits as its factorization.

118922989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 49.

The square root of 118922989 is about 10905.1817499756. The cubic root of 118922989 is about 491.7623461149.

It can be divided in two parts, 118922 and 989, that added together give a palindrome (119911).

The spelling of 118922989 in words is "one hundred eighteen million, nine hundred twenty-two thousand, nine hundred eighty-nine".