998105976 has 224 divisors, whose sum is σ = 3349301760. Its totient is φ = 272517696.

The previous prime is 998105971. The next prime is 998105993. The reversal of 998105976 is 679501899.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998105971) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 938421 + ... + 939483.

It is an arithmetic number, because the mean of its divisors is an integer number (14952240).

Almost surely, 2^998105976 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 998105976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1674650880).

998105976 is an abundant number, since it is smaller than the sum of its proper divisors (2351195784).

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

998105976 is a wasteful number, since it uses less digits than its factorization.

998105976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117 (or 1098 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 54.

The square root of 998105976 is about 31592.8152591693. The cubic root of 998105976 is about 999.3682596548.

The spelling of 998105976 in words is "nine hundred ninety-eight million, one hundred five thousand, nine hundred seventy-six".