171406933 has 2 divisors, whose sum is σ = 171406934. Its totient is φ = 171406932.

The previous prime is 171406931. The next prime is 171406957. The reversal of 171406933 is 339604171.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166487409 + 4919524 = 12903^2 + 2218^2 .

It is an emirp because it is prime and its reverse (339604171) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 171406933 - 2¹ = 171406931 is a prime.

Together with 171406931, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171406931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85703466 + 85703467.

It is an arithmetic number, because the mean of its divisors is an integer number (85703467).

Almost surely, 2^171406933 is an apocalyptic number.

It is an amenable number.

171406933 is a deficient number, since it is larger than the sum of its proper divisors (1).

171406933 is an equidigital number, since it uses as much as digits as its factorization.

171406933 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 171406933 is about 13092.2470569418. The cubic root of 171406933 is about 555.4898502397.

The spelling of 171406933 in words is "one hundred seventy-one million, four hundred six thousand, nine hundred thirty-three".