79609 has 2 divisors, whose sum is σ = 79610. Its totient is φ = 79608.

The previous prime is 79601. The next prime is 79613. The reversal of 79609 is 90697.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73984 + 5625 = 272^2 + 75^2 .

It is an emirp because it is prime and its reverse (90697) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79609 - 2³ = 79601 is a prime.

It is equal to p₇₇₉₈ and since 79609 and 7798 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (79601) 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, 39804 + 39805.

It is an arithmetic number, because the mean of its divisors is an integer number (39805).

2⁷⁹⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

79609 is a deficient number, since it is larger than the sum of its proper divisors (1).

79609 is an equidigital number, since it uses as much as digits as its factorization.

79609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 79609 is about 282.1506689696. The cubic root of 79609 is about 43.0183804601.

The spelling of 79609 in words is "seventy-nine thousand, six hundred nine".