169365389 has 2 divisors, whose sum is σ = 169365390. Its totient is φ = 169365388.

The previous prime is 169365367. The next prime is 169365397. The reversal of 169365389 is 983563961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162129289 + 7236100 = 12733^2 + 2690^2 .

It is an emirp because it is prime and its reverse (983563961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 169365389 - 2¹⁶ = 169299853 is a prime.

It is a super-2 number, since 2×169365389² = 57369269982242642, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (169365289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84682694 + 84682695.

It is an arithmetic number, because the mean of its divisors is an integer number (84682695).

Almost surely, 2^169365389 is an apocalyptic number.

It is an amenable number.

169365389 is a deficient number, since it is larger than the sum of its proper divisors (1).

169365389 is an equidigital number, since it uses as much as digits as its factorization.

169365389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1049760, while the sum is 50.

The square root of 169365389 is about 13014.0458351736. The cubic root of 169365389 is about 553.2756469193.

The spelling of 169365389 in words is "one hundred sixty-nine million, three hundred sixty-five thousand, three hundred eighty-nine".