800090001 has 32 divisors (see below), whose sum is σ = 1210734720. Its totient is φ = 522070272.

The previous prime is 800089999. The next prime is 800090003. The reversal of 800090001 is 100090008.

Added to its reverse (100090008) it gives a square (900180009 = 30003²).

It is an interprime number because it is at equal distance from previous prime (800089999) and next prime (800090003).

It is not a de Polignac number, because 800090001 - 2¹ = 800089999 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (800090003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 268546 + ... + 271508.

It is an arithmetic number, because the mean of its divisors is an integer number (37835460).

Almost surely, 2^800090001 is an apocalyptic number.

It is an amenable number.

800090001 is a deficient number, since it is larger than the sum of its proper divisors (410644719).

800090001 is a wasteful number, since it uses less digits than its factorization.

800090001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3182 (or 3176 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 800090001 is about 28285.8622106522. The cubic root of 800090001 is about 928.3525777202.

Adding to 800090001 its reverse (100090008), we get a square (900180009 = 30003²).

The spelling of 800090001 in words is "eight hundred million, ninety thousand, one".