80013977 has 2 divisors, whose sum is σ = 80013978. Its totient is φ = 80013976.

The previous prime is 80013893. The next prime is 80013979. The reversal of 80013977 is 77931008.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76930441 + 3083536 = 8771^2 + 1756^2 .

It is a cyclic number.

It is not a de Polignac number, because 80013977 - 2²² = 75819673 is a prime.

Together with 80013979, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80013979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40006988 + 40006989.

It is an arithmetic number, because the mean of its divisors is an integer number (40006989).

Almost surely, 2^80013977 is an apocalyptic number.

It is an amenable number.

80013977 is a deficient number, since it is larger than the sum of its proper divisors (1).

80013977 is an equidigital number, since it uses as much as digits as its factorization.

80013977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 80013977 is about 8945.0532139278. The cubic root of 80013977 is about 430.9120303232.

The spelling of 80013977 in words is "eighty million, thirteen thousand, nine hundred seventy-seven".