80440859 has 2 divisors, whose sum is σ = 80440860. Its totient is φ = 80440858.

The previous prime is 80440853. The next prime is 80440901. The reversal of 80440859 is 95804408.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80440859 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80440853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40220429 + 40220430.

It is an arithmetic number, because the mean of its divisors is an integer number (40220430).

Almost surely, 2^80440859 is an apocalyptic number.

80440859 is a deficient number, since it is larger than the sum of its proper divisors (1).

80440859 is an equidigital number, since it uses as much as digits as its factorization.

80440859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 80440859 is about 8968.8828178319. The cubic root of 80440859 is about 431.6769901246.

The spelling of 80440859 in words is "eighty million, four hundred forty thousand, eight hundred fifty-nine".