108986789 has 2 divisors, whose sum is σ = 108986790. Its totient is φ = 108986788.

The previous prime is 108986753. The next prime is 108986803. The reversal of 108986789 is 987689801.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93122500 + 15864289 = 9650^2 + 3983^2 .

It is a cyclic number.

It is not a de Polignac number, because 108986789 - 2¹² = 108982693 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108986729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54493394 + 54493395.

It is an arithmetic number, because the mean of its divisors is an integer number (54493395).

Almost surely, 2^108986789 is an apocalyptic number.

It is an amenable number.

108986789 is a deficient number, since it is larger than the sum of its proper divisors (1).

108986789 is an equidigital number, since it uses as much as digits as its factorization.

108986789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 56.

The square root of 108986789 is about 10439.6737975858. The cubic root of 108986789 is about 477.6663185326. Note that the first 3 decimals are identical.

It can be divided in two parts, 1089 and 86789, that added together give a palindrome (87878).

The spelling of 108986789 in words is "one hundred eight million, nine hundred eighty-six thousand, seven hundred eighty-nine".