80872093 has 2 divisors, whose sum is σ = 80872094. Its totient is φ = 80872092.

The previous prime is 80872079. The next prime is 80872133. The reversal of 80872093 is 39027808.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68608089 + 12264004 = 8283^2 + 3502^2 .

It is a cyclic number.

It is not a de Polignac number, because 80872093 - 2¹³ = 80863901 is a prime.

It is equal to p_4717378 and since 80872093 and 4717378 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80872003) 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, 40436046 + 40436047.

It is an arithmetic number, because the mean of its divisors is an integer number (40436047).

Almost surely, 2^80872093 is an apocalyptic number.

It is an amenable number.

80872093 is a deficient number, since it is larger than the sum of its proper divisors (1).

80872093 is an equidigital number, since it uses as much as digits as its factorization.

80872093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 80872093 is about 8992.8912480915. The cubic root of 80872093 is about 432.4470056578.

The spelling of 80872093 in words is "eighty million, eight hundred seventy-two thousand, ninety-three".