79873147 has 2 divisors, whose sum is σ = 79873148. Its totient is φ = 79873146.

The previous prime is 79873127. The next prime is 79873159. The reversal of 79873147 is 74137897.

It is a strong prime.

It is an emirp because it is prime and its reverse (74137897) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79873147 - 2¹⁹ = 79348859 is a prime.

It is a super-2 number, since 2×79873147² = 12759439223367218, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 79873097 and 79873106.

It is not a weakly prime, because it can be changed into another prime (79873127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39936573 + 39936574.

It is an arithmetic number, because the mean of its divisors is an integer number (39936574).

Almost surely, 2^79873147 is an apocalyptic number.

79873147 is a deficient number, since it is larger than the sum of its proper divisors (1).

79873147 is an equidigital number, since it uses as much as digits as its factorization.

79873147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 296352, while the sum is 46.

The square root of 79873147 is about 8937.1777983880. The cubic root of 79873147 is about 430.6590704371.

The spelling of 79873147 in words is "seventy-nine million, eight hundred seventy-three thousand, one hundred forty-seven".