80409811 has 2 divisors, whose sum is σ = 80409812. Its totient is φ = 80409810.

The previous prime is 80409781. The next prime is 80409827. The reversal of 80409811 is 11890408.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80409811 - 2⁹ = 80409299 is a prime.

It is not a weakly prime, because it can be changed into another prime (80409841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40204905 + 40204906.

It is an arithmetic number, because the mean of its divisors is an integer number (40204906).

Almost surely, 2^80409811 is an apocalyptic number.

80409811 is a deficient number, since it is larger than the sum of its proper divisors (1).

80409811 is an equidigital number, since it uses as much as digits as its factorization.

80409811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 80409811 is about 8967.1517774598. The cubic root of 80409811 is about 431.6214444227.

The spelling of 80409811 in words is "eighty million, four hundred nine thousand, eight hundred eleven".