79423 has 2 divisors, whose sum is σ = 79424. Its totient is φ = 79422.

The previous prime is 79411. The next prime is 79427. The reversal of 79423 is 32497.

It is a strong prime.

It is an emirp because it is prime and its reverse (32497) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79423 is a prime.

79423 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39711 + 39712.

It is an arithmetic number, because the mean of its divisors is an integer number (39712).

2⁷⁹⁴²³ is an apocalyptic number.

79423 is a deficient number, since it is larger than the sum of its proper divisors (1).

79423 is an equidigital number, since it uses as much as digits as its factorization.

79423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 25.

The square root of 79423 is about 281.8208650899. The cubic root of 79423 is about 42.9848513431.

The spelling of 79423 in words is "seventy-nine thousand, four hundred twenty-three".