80859887 has 2 divisors, whose sum is σ = 80859888. Its totient is φ = 80859886.

The previous prime is 80859853. The next prime is 80859923. The reversal of 80859887 is 78895808.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80859887 - 2¹⁰ = 80858863 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80859817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40429943 + 40429944.

It is an arithmetic number, because the mean of its divisors is an integer number (40429944).

Almost surely, 2^80859887 is an apocalyptic number.

80859887 is a deficient number, since it is larger than the sum of its proper divisors (1).

80859887 is an equidigital number, since it uses as much as digits as its factorization.

80859887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1290240, while the sum is 53.

The square root of 80859887 is about 8992.2125753343. The cubic root of 80859887 is about 432.4252481989.

The spelling of 80859887 in words is "eighty million, eight hundred fifty-nine thousand, eight hundred eighty-seven".