79089841 has 2 divisors, whose sum is σ = 79089842. Its totient is φ = 79089840.

The previous prime is 79089839. The next prime is 79089859. The reversal of 79089841 is 14898097.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57699216 + 21390625 = 7596^2 + 4625^2 .

It is a cyclic number.

It is not a de Polignac number, because 79089841 - 2¹ = 79089839 is a prime.

Together with 79089839, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 79089791 and 79089800.

It is not a weakly prime, because it can be changed into another prime (79789841) 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, 39544920 + 39544921.

It is an arithmetic number, because the mean of its divisors is an integer number (39544921).

Almost surely, 2^79089841 is an apocalyptic number.

It is an amenable number.

79089841 is a deficient number, since it is larger than the sum of its proper divisors (1).

79089841 is an equidigital number, since it uses as much as digits as its factorization.

79089841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 79089841 is about 8893.2469323639. The cubic root of 79089841 is about 429.2466365236.

The spelling of 79089841 in words is "seventy-nine million, eighty-nine thousand, eight hundred forty-one".