171340979 has 2 divisors, whose sum is σ = 171340980. Its totient is φ = 171340978.

The previous prime is 171340957. The next prime is 171340987. The reversal of 171340979 is 979043171.

It is a strong prime.

It is an emirp because it is prime and its reverse (979043171) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 171340979 - 2¹² = 171336883 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (171340579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85670489 + 85670490.

It is an arithmetic number, because the mean of its divisors is an integer number (85670490).

Almost surely, 2^171340979 is an apocalyptic number.

171340979 is a deficient number, since it is larger than the sum of its proper divisors (1).

171340979 is an equidigital number, since it uses as much as digits as its factorization.

171340979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47628, while the sum is 41.

The square root of 171340979 is about 13089.7279956461. The cubic root of 171340979 is about 555.4185939279.

The spelling of 171340979 in words is "one hundred seventy-one million, three hundred forty thousand, nine hundred seventy-nine".