9898894089644 has 12 divisors (see below), whose sum is σ = 19797788179344. Its totient is φ = 4242383181264.

The previous prime is 9898894089631. The next prime is 9898894089671. The reversal of 9898894089644 is 4469804988989.

9898894089644 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176765965859 + ... + 176765965914.

It is an arithmetic number, because the mean of its divisors is an integer number (1649815681612).

Almost surely, 2^{9898894089644} is an apocalyptic number.

It is an amenable number.

9898894089644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

9898894089644 is a wasteful number, since it uses less digits than its factorization.

9898894089644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353531931784 (or 353531931782 counting only the distinct ones).

The product of its (nonzero) digits is 10319560704, while the sum is 86.

The spelling of 9898894089644 in words is "nine trillion, eight hundred ninety-eight billion, eight hundred ninety-four million, eighty-nine thousand, six hundred forty-four".