80415859 has 2 divisors, whose sum is σ = 80415860. Its totient is φ = 80415858.

The previous prime is 80415833. The next prime is 80415931. The reversal of 80415859 is 95851408.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80415859 - 2⁵ = 80415827 is a prime.

It is not a weakly prime, because it can be changed into another prime (80415059) 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, 40207929 + 40207930.

It is an arithmetic number, because the mean of its divisors is an integer number (40207930).

Almost surely, 2^80415859 is an apocalyptic number.

80415859 is a deficient number, since it is larger than the sum of its proper divisors (1).

80415859 is an equidigital number, since it uses as much as digits as its factorization.

80415859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 80415859 is about 8967.4890019447. The cubic root of 80415859 is about 431.6322655776.

The spelling of 80415859 in words is "eighty million, four hundred fifteen thousand, eight hundred fifty-nine".