79287223 has 2 divisors, whose sum is σ = 79287224. Its totient is φ = 79287222.

The previous prime is 79287211. The next prime is 79287253. The reversal of 79287223 is 32278297.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79287223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79287253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39643611 + 39643612.

It is an arithmetic number, because the mean of its divisors is an integer number (39643612).

Almost surely, 2^79287223 is an apocalyptic number.

79287223 is a deficient number, since it is larger than the sum of its proper divisors (1).

79287223 is an equidigital number, since it uses as much as digits as its factorization.

79287223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 40.

The square root of 79287223 is about 8904.3373139162. The cubic root of 79287223 is about 429.6034256038.

It can be divided in two parts, 7928 and 7223, that added together give a palindrome (15151).

The spelling of 79287223 in words is "seventy-nine million, two hundred eighty-seven thousand, two hundred twenty-three".