169040849 has 2 divisors, whose sum is σ = 169040850. Its totient is φ = 169040848.

The previous prime is 169040813. The next prime is 169040897. The reversal of 169040849 is 948040961.

169040849 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., 101143249 + 67897600 = 10057^2 + 8240^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-169040849 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (169040149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84520424 + 84520425.

It is an arithmetic number, because the mean of its divisors is an integer number (84520425).

Almost surely, 2^169040849 is an apocalyptic number.

It is an amenable number.

169040849 is a deficient number, since it is larger than the sum of its proper divisors (1).

169040849 is an equidigital number, since it uses as much as digits as its factorization.

169040849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 169040849 is about 13001.5710204575. The cubic root of 169040849 is about 552.9220231289.

The spelling of 169040849 in words is "one hundred sixty-nine million, forty thousand, eight hundred forty-nine".