480099891 has 4 divisors (see below), whose sum is σ = 640133192. Its totient is φ = 320066592.

The previous prime is 480099889. The next prime is 480099899. The reversal of 480099891 is 198990084.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 480099891 - 2¹ = 480099889 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 480099891.

It is not an unprimeable number, because it can be changed into a prime (480099899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80016646 + ... + 80016651.

It is an arithmetic number, because the mean of its divisors is an integer number (160033298).

Almost surely, 2^480099891 is an apocalyptic number.

480099891 is a deficient number, since it is larger than the sum of its proper divisors (160033301).

480099891 is a wasteful number, since it uses less digits than its factorization.

480099891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160033300.

The product of its (nonzero) digits is 186624, while the sum is 48.

The square root of 480099891 is about 21911.1818713642. The cubic root of 480099891 is about 783.0278383615.

The spelling of 480099891 in words is "four hundred eighty million, ninety-nine thousand, eight hundred ninety-one".