998400294100 has 324 divisors, whose sum is σ = 2590771159200. Its totient is φ = 332777808000.

The previous prime is 998400294091. The next prime is 998400294209. The reversal of 998400294100 is 1492004899.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 220931641 + ... + 220936159.

Almost surely, 2^998400294100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 998400294100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1295385579600).

998400294100 is an abundant number, since it is smaller than the sum of its proper divisors (1592370865100).

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

998400294100 is a wasteful number, since it uses less digits than its factorization.

998400294100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4636 (or 4587 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 46.

Adding to 998400294100 its reverse (1492004899), we get a palindrome (999892298999).

The spelling of 998400294100 in words is "nine hundred ninety-eight billion, four hundred million, two hundred ninety-four thousand, one hundred".