800909955 has 96 divisors (see below), whose sum is σ = 1502392320. Its totient is φ = 393880320.

The previous prime is 800909947. The next prime is 800909957. The reversal of 800909955 is 559909008.

It is not a de Polignac number, because 800909955 - 2³ = 800909947 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 800909955.

It is not an unprimeable number, because it can be changed into a prime (800909957) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3045154 + ... + 3045416.

It is an arithmetic number, because the mean of its divisors is an integer number (15649920).

Almost surely, 2^800909955 is an apocalyptic number.

800909955 is a deficient number, since it is larger than the sum of its proper divisors (701482365).

800909955 is a wasteful number, since it uses less digits than its factorization.

800909955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401 (or 398 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 45.

The square root of 800909955 is about 28300.3525596414. The cubic root of 800909955 is about 928.6696031055.

The spelling of 800909955 in words is "eight hundred million, nine hundred nine thousand, nine hundred fifty-five".