98391980 has 24 divisors (see below), whose sum is σ = 208255488. Its totient is φ = 39045888.

The previous prime is 98391977. The next prime is 98391989. The reversal of 98391980 is 8919389.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (98391989) 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, 16829 + ... + 21908.

It is an arithmetic number, because the mean of its divisors is an integer number (8677312).

Almost surely, 2^98391980 is an apocalyptic number.

It is an amenable number.

98391980 is an abundant number, since it is smaller than the sum of its proper divisors (109863508).

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

98391980 is a wasteful number, since it uses less digits than its factorization.

98391980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38873 (or 38871 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 47.

The square root of 98391980 is about 9919.2731588559. The cubic root of 98391980 is about 461.6575049481.

The spelling of 98391980 in words is "ninety-eight million, three hundred ninety-one thousand, nine hundred eighty".