79856141 has 2 divisors, whose sum is σ = 79856142. Its totient is φ = 79856140.

The previous prime is 79856131. The next prime is 79856143. The reversal of 79856141 is 14165897.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50197225 + 29658916 = 7085^2 + 5446^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79856141 is a prime.

Together with 79856143, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79856143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39928070 + 39928071.

It is an arithmetic number, because the mean of its divisors is an integer number (39928071).

Almost surely, 2^79856141 is an apocalyptic number.

It is an amenable number.

79856141 is a deficient number, since it is larger than the sum of its proper divisors (1).

79856141 is an equidigital number, since it uses as much as digits as its factorization.

79856141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 41.

The square root of 79856141 is about 8936.2263288258. The cubic root of 79856141 is about 430.6285040191.

It can be divided in two parts, 79856 and 141, that added together give a palindrome (79997).

The spelling of 79856141 in words is "seventy-nine million, eight hundred fifty-six thousand, one hundred forty-one".