169436089 has 2 divisors, whose sum is σ = 169436090. Its totient is φ = 169436088.

The previous prime is 169436087. The next prime is 169436123. The reversal of 169436089 is 980634961.

169436089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129960000 + 39476089 = 11400^2 + 6283^2 .

It is a cyclic number.

It is not a de Polignac number, because 169436089 - 2¹ = 169436087 is a prime.

Together with 169436087, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (169436083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84718044 + 84718045.

It is an arithmetic number, because the mean of its divisors is an integer number (84718045).

Almost surely, 2^169436089 is an apocalyptic number.

It is an amenable number.

169436089 is a deficient number, since it is larger than the sum of its proper divisors (1).

169436089 is an equidigital number, since it uses as much as digits as its factorization.

169436089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 169436089 is about 13016.7618477101. The cubic root of 169436089 is about 553.3526227933.

It can be divided in two parts, 16943 and 6089, that added together give a palindrome (23032).

The spelling of 169436089 in words is "one hundred sixty-nine million, four hundred thirty-six thousand, eighty-nine".