80027977 has 2 divisors, whose sum is σ = 80027978. Its totient is φ = 80027976.

The previous prime is 80027951. The next prime is 80027989. The reversal of 80027977 is 77972008.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74287161 + 5740816 = 8619^2 + 2396^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80027977 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80027377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40013988 + 40013989.

It is an arithmetic number, because the mean of its divisors is an integer number (40013989).

Almost surely, 2^80027977 is an apocalyptic number.

It is an amenable number.

80027977 is a deficient number, since it is larger than the sum of its proper divisors (1).

80027977 is an equidigital number, since it uses as much as digits as its factorization.

80027977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49392, while the sum is 40.

The square root of 80027977 is about 8945.8357351340. The cubic root of 80027977 is about 430.9371610017.

The spelling of 80027977 in words is "eighty million, twenty-seven thousand, nine hundred seventy-seven".