406488080891 has 4 divisors (see below), whose sum is σ = 413151819984. Its totient is φ = 399824341800.

The previous prime is 406488080881. The next prime is 406488080897. The reversal of 406488080891 is 198080884604.

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

It is a cyclic number.

It is not a de Polignac number, because 406488080891 - 2³⁴ = 389308211707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (406488080897) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3331869455 + ... + 3331869576.

It is an arithmetic number, because the mean of its divisors is an integer number (103287954996).

Almost surely, 2^406488080891 is an apocalyptic number.

406488080891 is a deficient number, since it is larger than the sum of its proper divisors (6663739093).

406488080891 is an equidigital number, since it uses as much as digits as its factorization.

406488080891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6663739092.

The product of its (nonzero) digits is 3538944, while the sum is 56.

The spelling of 406488080891 in words is "four hundred six billion, four hundred eighty-eight million, eighty thousand, eight hundred ninety-one".