79928201 has 2 divisors, whose sum is σ = 79928202. Its totient is φ = 79928200.

The previous prime is 79928161. The next prime is 79928207. The reversal of 79928201 is 10282997.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52940176 + 26988025 = 7276^2 + 5195^2 .

It is an emirp because it is prime and its reverse (10282997) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79928201 is a prime.

It is not a weakly prime, because it can be changed into another prime (79928207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39964100 + 39964101.

It is an arithmetic number, because the mean of its divisors is an integer number (39964101).

Almost surely, 2^79928201 is an apocalyptic number.

It is an amenable number.

79928201 is a deficient number, since it is larger than the sum of its proper divisors (1).

79928201 is an equidigital number, since it uses as much as digits as its factorization.

79928201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 79928201 is about 8940.2573229186. The cubic root of 79928201 is about 430.7579942099.

The spelling of 79928201 in words is "seventy-nine million, nine hundred twenty-eight thousand, two hundred one".