80899771 has 2 divisors, whose sum is σ = 80899772. Its totient is φ = 80899770.

The previous prime is 80899759. The next prime is 80899799. The reversal of 80899771 is 17799808.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80899771 - 2¹¹ = 80897723 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80894771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40449885 + 40449886.

It is an arithmetic number, because the mean of its divisors is an integer number (40449886).

Almost surely, 2^80899771 is an apocalyptic number.

80899771 is a deficient number, since it is larger than the sum of its proper divisors (1).

80899771 is an equidigital number, since it uses as much as digits as its factorization.

80899771 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 80899771 is about 8994.4299986158. The cubic root of 80899771 is about 432.4963341821.

The spelling of 80899771 in words is "eighty million, eight hundred ninety-nine thousand, seven hundred seventy-one".