79973 has 2 divisors, whose sum is σ = 79974. Its totient is φ = 79972.

The previous prime is 79967. The next prime is 79979. The reversal of 79973 is 37997.

It is a balanced prime because it is at equal distance from previous prime (79967) and next prime (79979).

It can be written as a sum of positive squares in only one way, i.e., 66049 + 13924 = 257^2 + 118^2 .

It is an emirp because it is prime and its reverse (37997) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79973 - 2¹⁴ = 63589 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39986 + 39987.

It is an arithmetic number, because the mean of its divisors is an integer number (39987).

2⁷⁹⁹⁷³ is an apocalyptic number.

It is an amenable number.

79973 is a deficient number, since it is larger than the sum of its proper divisors (1).

79973 is an equidigital number, since it uses as much as digits as its factorization.

79973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11907, while the sum is 35.

The square root of 79973 is about 282.7949787390. The cubic root of 79973 is about 43.0838457771.

Adding to 79973 its sum of digits (35), we get a palindrome (80008).

It can be divided in two parts, 7997 and 3, that added together give a cube (8000 = 20³).

The spelling of 79973 in words is "seventy-nine thousand, nine hundred seventy-three".