80249671 has 2 divisors, whose sum is σ = 80249672. Its totient is φ = 80249670.

The previous prime is 80249621. The next prime is 80249677. The reversal of 80249671 is 17694208.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80249671 - 2²³ = 71861063 is a prime.

It is equal to p_4683079 and since 80249671 and 4683079 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80249671.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80249677) 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, 40124835 + 40124836.

It is an arithmetic number, because the mean of its divisors is an integer number (40124836).

Almost surely, 2^80249671 is an apocalyptic number.

80249671 is a deficient number, since it is larger than the sum of its proper divisors (1).

80249671 is an equidigital number, since it uses as much as digits as its factorization.

80249671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 80249671 is about 8958.2180705763. The cubic root of 80249671 is about 431.3347223870.

The spelling of 80249671 in words is "eighty million, two hundred forty-nine thousand, six hundred seventy-one".