79147 has 2 divisors, whose sum is σ = 79148. Its totient is φ = 79146.

The previous prime is 79139. The next prime is 79151. The reversal of 79147 is 74197.

It is a strong prime.

It is an emirp because it is prime and its reverse (74197) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79147 - 2³ = 79139 is a prime.

It is not a weakly prime, because it can be changed into another prime (79187) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39573 + 39574.

It is an arithmetic number, because the mean of its divisors is an integer number (39574).

2⁷⁹¹⁴⁷ is an apocalyptic number.

79147 is a deficient number, since it is larger than the sum of its proper divisors (1).

79147 is an equidigital number, since it uses as much as digits as its factorization.

79147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1764, while the sum is 28.

The square root of 79147 is about 281.3307661810. The cubic root of 79147 is about 42.9350018534.

Subtracting from 79147 its reverse (74197), we obtain a triangular number (4950 = T₉₉).

It can be divided in two parts, 7914 and 7, that added together give a square (7921 = 89²).

The spelling of 79147 in words is "seventy-nine thousand, one hundred forty-seven".