79723201 has 2 divisors, whose sum is σ = 79723202. Its totient is φ = 79723200.

The previous prime is 79723153. The next prime is 79723283. The reversal of 79723201 is 10232797.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79121025 + 602176 = 8895^2 + 776^2 .

It is an emirp because it is prime and its reverse (10232797) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79723201 - 2¹¹ = 79721153 is a prime.

It is not a weakly prime, because it can be changed into another prime (79723801) 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, 39861600 + 39861601.

It is an arithmetic number, because the mean of its divisors is an integer number (39861601).

Almost surely, 2^79723201 is an apocalyptic number.

It is an amenable number.

79723201 is a deficient number, since it is larger than the sum of its proper divisors (1).

79723201 is an equidigital number, since it uses as much as digits as its factorization.

79723201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 79723201 is about 8928.7849677322. The cubic root of 79723201 is about 430.3894092769.

Adding to 79723201 its reverse (10232797), we get a palindrome (89955998).

The spelling of 79723201 in words is "seventy-nine million, seven hundred twenty-three thousand, two hundred one".