79845823 has 2 divisors, whose sum is σ = 79845824. Its totient is φ = 79845822.

The previous prime is 79845803. The next prime is 79845827. The reversal of 79845823 is 32854897.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79845823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79845827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39922911 + 39922912.

It is an arithmetic number, because the mean of its divisors is an integer number (39922912).

Almost surely, 2^79845823 is an apocalyptic number.

79845823 is a deficient number, since it is larger than the sum of its proper divisors (1).

79845823 is an equidigital number, since it uses as much as digits as its factorization.

79845823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 46.

The square root of 79845823 is about 8935.6489971350. The cubic root of 79845823 is about 430.6099564316.

The spelling of 79845823 in words is "seventy-nine million, eight hundred forty-five thousand, eight hundred twenty-three".