80446819 has 2 divisors, whose sum is σ = 80446820. Its totient is φ = 80446818.

The previous prime is 80446799. The next prime is 80446823. The reversal of 80446819 is 91864408.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80446819 - 2²⁵ = 46892387 is a prime.

It is a super-2 number, since 2×80446819² = 12943381374437522, which contains 22 as substring.

It is equal to p_4693954 and since 80446819 and 4693954 have the same sum of digits, it is a Honaker prime.

It is a plaindrome in base 13.

It is not a weakly prime, because it can be changed into another prime (80441819) 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, 40223409 + 40223410.

It is an arithmetic number, because the mean of its divisors is an integer number (40223410).

Almost surely, 2^80446819 is an apocalyptic number.

80446819 is a deficient number, since it is larger than the sum of its proper divisors (1).

80446819 is an equidigital number, since it uses as much as digits as its factorization.

80446819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 80446819 is about 8969.2150715656. The cubic root of 80446819 is about 431.6876510887.

The spelling of 80446819 in words is "eighty million, four hundred forty-six thousand, eight hundred nineteen".