169396389 has 6 divisors (see below), whose sum is σ = 244683686. Its totient is φ = 112930920.

The previous prime is 169396387. The next prime is 169396391. The reversal of 169396389 is 983693961.

It is an interprime number because it is at equal distance from previous prime (169396387) and next prime (169396391).

It can be written as a sum of positive squares in only one way, i.e., 100340289 + 69056100 = 10017^2 + 8310^2 .

It is not a de Polignac number, because 169396389 - 2¹ = 169396387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169396387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9410902 + ... + 9410919.

Almost surely, 2^169396389 is an apocalyptic number.

It is an amenable number.

169396389 is a deficient number, since it is larger than the sum of its proper divisors (75287297).

169396389 is a wasteful number, since it uses less digits than its factorization.

169396389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18821827 (or 18821824 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 54.

The square root of 169396389 is about 13015.2368015338. The cubic root of 169396389 is about 553.3094013536.

The spelling of 169396389 in words is "one hundred sixty-nine million, three hundred ninety-six thousand, three hundred eighty-nine".