80403971 has 2 divisors, whose sum is σ = 80403972. Its totient is φ = 80403970.

The previous prime is 80403901. The next prime is 80403977. The reversal of 80403971 is 17930408.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80403971 - 2²² = 76209667 is a prime.

It is not a weakly prime, because it can be changed into another prime (80403977) 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, 40201985 + 40201986.

It is an arithmetic number, because the mean of its divisors is an integer number (40201986).

Almost surely, 2^80403971 is an apocalyptic number.

80403971 is a deficient number, since it is larger than the sum of its proper divisors (1).

80403971 is an equidigital number, since it uses as much as digits as its factorization.

80403971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 80403971 is about 8966.8261386067. The cubic root of 80403971 is about 431.6109949090.

The spelling of 80403971 in words is "eighty million, four hundred three thousand, nine hundred seventy-one".