9898910847890 has 16 divisors (see below), whose sum is σ = 17822240979480. Its totient is φ = 3958630682880.

The previous prime is 9898910847883. The next prime is 9898910847907. The reversal of 9898910847890 is 987480198989.

It can be written as a sum of positive squares in 4 ways, for example, as 9290200368289 + 608710479601 = 3047983^2 + 780199^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116662505 + ... + 116747324.

Almost surely, 2^{9898910847890} is an apocalyptic number.

9898910847890 is a deficient number, since it is larger than the sum of its proper divisors (7923330131590).

9898910847890 is a wasteful number, since it uses less digits than its factorization.

9898910847890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233414077.

The product of its (nonzero) digits is 752467968, while the sum is 80.

The spelling of 9898910847890 in words is "nine trillion, eight hundred ninety-eight billion, nine hundred ten million, eight hundred forty-seven thousand, eight hundred ninety".