79047081 has 6 divisors (see below), whose sum is σ = 114179130. Its totient is φ = 52698048.

The previous prime is 79047071. The next prime is 79047083. The reversal of 79047081 is 18074097.

It can be written as a sum of positive squares in only one way, i.e., 72590400 + 6456681 = 8520^2 + 2541^2 .

It is not a de Polignac number, because 79047081 - 2¹³ = 79038889 is a prime.

It is a super-2 number, since 2×79047081² = 12496882029241122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (79047083) 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 in 5 ways as a sum of consecutive naturals, for example, 4391496 + ... + 4391513.

It is an arithmetic number, because the mean of its divisors is an integer number (19029855).

Almost surely, 2^79047081 is an apocalyptic number.

It is an amenable number.

79047081 is a deficient number, since it is larger than the sum of its proper divisors (35132049).

79047081 is a wasteful number, since it uses less digits than its factorization.

79047081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8783015 (or 8783012 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 79047081 is about 8890.8425360030. The cubic root of 79047081 is about 429.1692650401.

The spelling of 79047081 in words is "seventy-nine million, forty-seven thousand, eighty-one".