169365397 has 2 divisors, whose sum is σ = 169365398. Its totient is φ = 169365396.

The previous prime is 169365389. The next prime is 169365419. The reversal of 169365397 is 793563961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160757041 + 8608356 = 12679^2 + 2934^2 .

It is a cyclic number.

It is not a de Polignac number, because 169365397 - 2³ = 169365389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 169365397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (169365337) 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, 84682698 + 84682699.

It is an arithmetic number, because the mean of its divisors is an integer number (84682699).

Almost surely, 2^169365397 is an apocalyptic number.

It is an amenable number.

169365397 is a deficient number, since it is larger than the sum of its proper divisors (1).

169365397 is an equidigital number, since it uses as much as digits as its factorization.

169365397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 918540, while the sum is 49.

The square root of 169365397 is about 13014.0461425338. The cubic root of 169365397 is about 553.2756556306.

The spelling of 169365397 in words is "one hundred sixty-nine million, three hundred sixty-five thousand, three hundred ninety-seven".