800901859 has 2 divisors, whose sum is σ = 800901860. Its totient is φ = 800901858.

The previous prime is 800901847. The next prime is 800901869. The reversal of 800901859 is 958109008.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 800901859 - 2²³ = 792513251 is a prime.

It is not a weakly prime, because it can be changed into another prime (800901809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400450929 + 400450930.

It is an arithmetic number, because the mean of its divisors is an integer number (400450930).

Almost surely, 2^800901859 is an apocalyptic number.

800901859 is a deficient number, since it is larger than the sum of its proper divisors (1).

800901859 is an equidigital number, since it uses as much as digits as its factorization.

800901859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 40.

The square root of 800901859 is about 28300.2095221926. The cubic root of 800901859 is about 928.6664739420. Note that the first 3 decimals are identical.

The spelling of 800901859 in words is "eight hundred million, nine hundred one thousand, eight hundred fifty-nine".