80409671 has 2 divisors, whose sum is σ = 80409672. Its totient is φ = 80409670.

The previous prime is 80409649. The next prime is 80409697. The reversal of 80409671 is 17690408.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80409671 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80409611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40204835 + 40204836.

It is an arithmetic number, because the mean of its divisors is an integer number (40204836).

Almost surely, 2^80409671 is an apocalyptic number.

80409671 is a deficient number, since it is larger than the sum of its proper divisors (1).

80409671 is an equidigital number, since it uses as much as digits as its factorization.

80409671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 80409671 is about 8967.1439711873. The cubic root of 80409671 is about 431.6211939266.

The spelling of 80409671 in words is "eighty million, four hundred nine thousand, six hundred seventy-one".