171473389 has 2 divisors, whose sum is σ = 171473390. Its totient is φ = 171473388.

The previous prime is 171473387. The next prime is 171473413. The reversal of 171473389 is 983374171.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133749225 + 37724164 = 11565^2 + 6142^2 .

It is a cyclic number.

It is not a de Polignac number, because 171473389 - 2¹ = 171473387 is a prime.

Together with 171473387, 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 (171473381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85736694 + 85736695.

It is an arithmetic number, because the mean of its divisors is an integer number (85736695).

Almost surely, 2^171473389 is an apocalyptic number.

It is an amenable number.

171473389 is a deficient number, since it is larger than the sum of its proper divisors (1).

171473389 is an equidigital number, since it uses as much as digits as its factorization.

171473389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 43.

The square root of 171473389 is about 13094.7848015918. The cubic root of 171473389 is about 555.5616304239.

The spelling of 171473389 in words is "one hundred seventy-one million, four hundred seventy-three thousand, three hundred eighty-nine".