998844620 has 24 divisors (see below), whose sum is σ = 2100428064. Its totient is φ = 398994176.

The previous prime is 998844617. The next prime is 998844647. The reversal of 998844620 is 26448899.

It is a happy number.

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, 18749 + ... + 48468.

It is an arithmetic number, because the mean of its divisors is an integer number (87517836).

Almost surely, 2^998844620 is an apocalyptic number.

It is an amenable number.

998844620 is an abundant number, since it is smaller than the sum of its proper divisors (1101583444).

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

998844620 is a wasteful number, since it uses less digits than its factorization.

998844620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67969 (or 67967 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 50.

The square root of 998844620 is about 31604.5031601511. The cubic root of 998844620 is about 999.6147249155.

The spelling of 998844620 in words is "nine hundred ninety-eight million, eight hundred forty-four thousand, six hundred twenty".