80789791 has 2 divisors, whose sum is σ = 80789792. Its totient is φ = 80789790.

The previous prime is 80789783. The next prime is 80789867. The reversal of 80789791 is 19798708.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80789791 - 2³ = 80789783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80789701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40394895 + 40394896.

It is an arithmetic number, because the mean of its divisors is an integer number (40394896).

Almost surely, 2^80789791 is an apocalyptic number.

80789791 is a deficient number, since it is larger than the sum of its proper divisors (1).

80789791 is an equidigital number, since it uses as much as digits as its factorization.

80789791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 49.

The square root of 80789791 is about 8988.3141355874. The cubic root of 80789791 is about 432.3002581521.

The spelling of 80789791 in words is "eighty million, seven hundred eighty-nine thousand, seven hundred ninety-one".