79354321 has 2 divisors, whose sum is σ = 79354322. Its totient is φ = 79354320.

The previous prime is 79354309. The next prime is 79354333. The reversal of 79354321 is 12345397.

It is a balanced prime because it is at equal distance from previous prime (79354309) and next prime (79354333).

It can be written as a sum of positive squares in only one way, i.e., 65028096 + 14326225 = 8064^2 + 3785^2 .

It is an emirp because it is prime and its reverse (12345397) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79354321 - 2⁹ = 79353809 is a prime.

It is a super-2 number, since 2×79354321² = 12594216522742082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (79354361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39677160 + 39677161.

It is an arithmetic number, because the mean of its divisors is an integer number (39677161).

Almost surely, 2^79354321 is an apocalyptic number.

It is an amenable number.

79354321 is a deficient number, since it is larger than the sum of its proper divisors (1).

79354321 is an equidigital number, since it uses as much as digits as its factorization.

79354321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 34.

The square root of 79354321 is about 8908.1042315411. The cubic root of 79354321 is about 429.7245775458.

The spelling of 79354321 in words is "seventy-nine million, three hundred fifty-four thousand, three hundred twenty-one".