800440560 has 60 divisors (see below), whose sum is σ = 2688148632. Its totient is φ = 213450624.

The previous prime is 800440559. The next prime is 800440567. The reversal of 800440560 is 65044008.

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×800440560² = 1281410180186227200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800440567) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 555142 + ... + 556581.

Almost surely, 2^800440560 is an apocalyptic number.

800440560 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

800440560 is an abundant number, since it is smaller than the sum of its proper divisors (1887708072).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

800440560 is a wasteful number, since it uses less digits than its factorization.

800440560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111742 (or 1111733 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 800440560 is about 28292.0582496219. The cubic root of 800440560 is about 928.4881436489.

Adding to 800440560 its reverse (65044008), we get a palindrome (865484568).

The spelling of 800440560 in words is "eight hundred million, four hundred forty thousand, five hundred sixty".