80744819 has 2 divisors, whose sum is σ = 80744820. Its totient is φ = 80744818.

The previous prime is 80744779. The next prime is 80744843. The reversal of 80744819 is 91844708.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80744819 - 2⁸ = 80744563 is a prime.

It is a super-2 number, since 2×80744819² = 13039451590685522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (80744899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40372409 + 40372410.

It is an arithmetic number, because the mean of its divisors is an integer number (40372410).

Almost surely, 2^80744819 is an apocalyptic number.

80744819 is a deficient number, since it is larger than the sum of its proper divisors (1).

80744819 is an equidigital number, since it uses as much as digits as its factorization.

80744819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 80744819 is about 8985.8120946301. The cubic root of 80744819 is about 432.2200293035.

The spelling of 80744819 in words is "eighty million, seven hundred forty-four thousand, eight hundred nineteen".