998888644434 has 32 divisors (see below), whose sum is σ = 2008609297920. Its totient is φ = 331160602752.

The previous prime is 998888644433. The next prime is 998888644463. The reversal of 998888644434 is 434446888899.

998888644434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (998888644433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 927999 + ... + 1690845.

It is an arithmetic number, because the mean of its divisors is an integer number (62769040560).

Almost surely, 2^998888644434 is an apocalyptic number.

998888644434 is an abundant number, since it is smaller than the sum of its proper divisors (1009720653486).

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

998888644434 is a wasteful number, since it uses less digits than its factorization.

998888644434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764034.

The product of its digits is 1528823808, while the sum is 75.

The spelling of 998888644434 in words is "nine hundred ninety-eight billion, eight hundred eighty-eight million, six hundred forty-four thousand, four hundred thirty-four".