9840169 has 2 divisors, whose sum is σ = 9840170. Its totient is φ = 9840168.

The previous prime is 9840151. The next prime is 9840179. The reversal of 9840169 is 9610489.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8928144 + 912025 = 2988^2 + 955^2 .

It is a cyclic number.

It is not a de Polignac number, because 9840169 - 2⁵ = 9840137 is a prime.

It is a super-2 number, since 2×9840169² = 193657851897122, which contains 22 as substring.

9840169 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (9840179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4920084 + 4920085.

It is an arithmetic number, because the mean of its divisors is an integer number (4920085).

Almost surely, 2^9840169 is an apocalyptic number.

It is an amenable number.

9840169 is a deficient number, since it is larger than the sum of its proper divisors (1).

9840169 is an equidigital number, since it uses as much as digits as its factorization.

9840169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 9840169 is about 3136.9043657721. The cubic root of 9840169 is about 214.2894807169.

The spelling of 9840169 in words is "nine million, eight hundred forty thousand, one hundred sixty-nine".