800440055 has 16 divisors (see below), whose sum is σ = 1009439904. Its totient is φ = 608549760.

The previous prime is 800440027. The next prime is 800440061. The reversal of 800440055 is 550044008.

It is not a de Polignac number, because 800440055 - 2¹⁴ = 800423671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42356 + ... + 58265.

It is an arithmetic number, because the mean of its divisors is an integer number (63089994).

Almost surely, 2^800440055 is an apocalyptic number.

800440055 is a deficient number, since it is larger than the sum of its proper divisors (208999849).

800440055 is a wasteful number, since it uses less digits than its factorization.

800440055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100706.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 800440055 is about 28292.0493248545. The cubic root of 800440055 is about 928.4879483870.

The spelling of 800440055 in words is "eight hundred million, four hundred forty thousand, fifty-five".