169896901 has 2 divisors, whose sum is σ = 169896902. Its totient is φ = 169896900.

The previous prime is 169896893. The next prime is 169896941. The reversal of 169896901 is 109698961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122988100 + 46908801 = 11090^2 + 6849^2 .

It is an emirp because it is prime and its reverse (109698961) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 106968691 and 196869601.

It is a cyclic number.

It is not a de Polignac number, because 169896901 - 2³ = 169896893 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (169896941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84948450 + 84948451.

It is an arithmetic number, because the mean of its divisors is an integer number (84948451).

Almost surely, 2^169896901 is an apocalyptic number.

It is an amenable number.

169896901 is a deficient number, since it is larger than the sum of its proper divisors (1).

169896901 is an equidigital number, since it uses as much as digits as its factorization.

169896901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 209952, while the sum is 49.

The square root of 169896901 is about 13034.4505446145. The cubic root of 169896901 is about 553.8538161219.

The spelling of 169896901 in words is "one hundred sixty-nine million, eight hundred ninety-six thousand, nine hundred one".