80858389 has 2 divisors, whose sum is σ = 80858390. Its totient is φ = 80858388.

The previous prime is 80858353. The next prime is 80858413. The reversal of 80858389 is 98385808.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80730225 + 128164 = 8985^2 + 358^2 .

It is a cyclic number.

It is not a de Polignac number, because 80858389 - 2²⁵ = 47303957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80858329) 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, 40429194 + 40429195.

It is an arithmetic number, because the mean of its divisors is an integer number (40429195).

Almost surely, 2^80858389 is an apocalyptic number.

It is an amenable number.

80858389 is a deficient number, since it is larger than the sum of its proper divisors (1).

80858389 is an equidigital number, since it uses as much as digits as its factorization.

80858389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 552960, while the sum is 49.

The square root of 80858389 is about 8992.1292806543. The cubic root of 80858389 is about 432.4225778306.

The spelling of 80858389 in words is "eighty million, eight hundred fifty-eight thousand, three hundred eighty-nine".