998597982 has 16 divisors (see below), whose sum is σ = 1998810000. Its totient is φ = 332596992.

The previous prime is 998597981. The next prime is 998597989. The reversal of 998597982 is 289795899.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998597981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59133 + ... + 74120.

It is an arithmetic number, because the mean of its divisors is an integer number (124925625).

Almost surely, 2^998597982 is an apocalyptic number.

998597982 is an abundant number, since it is smaller than the sum of its proper divisors (1000212018).

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

998597982 is a wasteful number, since it uses less digits than its factorization.

998597982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134507.

The product of its digits is 29393280, while the sum is 66.

The square root of 998597982 is about 31600.6009752979. The cubic root of 998597982 is about 999.5324420903.

The spelling of 998597982 in words is "nine hundred ninety-eight million, five hundred ninety-seven thousand, nine hundred eighty-two".