79853843 has 2 divisors, whose sum is σ = 79853844. Its totient is φ = 79853842.

The previous prime is 79853831. The next prime is 79853867. The reversal of 79853843 is 34835897.

It is a weak prime.

It is an emirp because it is prime and its reverse (34835897) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79853843 - 2¹⁶ = 79788307 is a prime.

It is not a weakly prime, because it can be changed into another prime (79850843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39926921 + 39926922.

It is an arithmetic number, because the mean of its divisors is an integer number (39926922).

Almost surely, 2^79853843 is an apocalyptic number.

79853843 is a deficient number, since it is larger than the sum of its proper divisors (1).

79853843 is an equidigital number, since it uses as much as digits as its factorization.

79853843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 47.

The square root of 79853843 is about 8936.0977501368. The cubic root of 79853843 is about 430.6243732836.

The spelling of 79853843 in words is "seventy-nine million, eight hundred fifty-three thousand, eight hundred forty-three".