80194487 has 2 divisors, whose sum is σ = 80194488. Its totient is φ = 80194486.

The previous prime is 80194469. The next prime is 80194493. The reversal of 80194487 is 78449108.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80194487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80194417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40097243 + 40097244.

It is an arithmetic number, because the mean of its divisors is an integer number (40097244).

Almost surely, 2^80194487 is an apocalyptic number.

80194487 is a deficient number, since it is larger than the sum of its proper divisors (1).

80194487 is an equidigital number, since it uses as much as digits as its factorization.

80194487 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 80194487 is about 8955.1374640482. The cubic root of 80194487 is about 431.2358300462.

The spelling of 80194487 in words is "eighty million, one hundred ninety-four thousand, four hundred eighty-seven".