80391193 has 2 divisors, whose sum is σ = 80391194. Its totient is φ = 80391192.

The previous prime is 80391173. The next prime is 80391221. The reversal of 80391193 is 39119308.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72114064 + 8277129 = 8492^2 + 2877^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80391193 is a prime.

It is not a weakly prime, because it can be changed into another prime (80391173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40195596 + 40195597.

It is an arithmetic number, because the mean of its divisors is an integer number (40195597).

Almost surely, 2^80391193 is an apocalyptic number.

It is an amenable number.

80391193 is a deficient number, since it is larger than the sum of its proper divisors (1).

80391193 is an equidigital number, since it uses as much as digits as its factorization.

80391193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 80391193 is about 8966.1135950868. The cubic root of 80391193 is about 431.5881294651.

The spelling of 80391193 in words is "eighty million, three hundred ninety-one thousand, one hundred ninety-three".