79812243 has 16 divisors (see below), whose sum is σ = 135132160. Its totient is φ = 45606888.

The previous prime is 79812193. The next prime is 79812247. The reversal of 79812243 is 34221897.

It is not a de Polignac number, because 79812243 - 2¹² = 79808147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79812198 and 79812207.

It is not an unprimeable number, because it can be changed into a prime (79812247) 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 15 ways as a sum of consecutive naturals, for example, 210955 + ... + 211332.

It is an arithmetic number, because the mean of its divisors is an integer number (8445760).

Almost surely, 2^79812243 is an apocalyptic number.

79812243 is a deficient number, since it is larger than the sum of its proper divisors (55319917).

79812243 is a wasteful number, since it uses less digits than its factorization.

79812243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422303 (or 422297 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 79812243 is about 8933.7698089888. The cubic root of 79812243 is about 430.5495821196.

It can be divided in two parts, 798 and 12243, that added together give a triangular number (13041 = T₁₆₁).

The spelling of 79812243 in words is "seventy-nine million, eight hundred twelve thousand, two hundred forty-three".