98199978 has 8 divisors (see below), whose sum is σ = 196399968. Its totient is φ = 32733324.

The previous prime is 98199931. The next prime is 98199989. The reversal of 98199978 is 87999189.

It is a sphenic number, since it is the product of 3 distinct primes.

98199978 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8183326 + ... + 8183337.

It is an arithmetic number, because the mean of its divisors is an integer number (24549996).

Almost surely, 2^98199978 is an apocalyptic number.

98199978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

98199978 is a wasteful number, since it uses less digits than its factorization.

98199978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16366668.

The product of its digits is 2939328, while the sum is 60.

The square root of 98199978 is about 9909.5902034342. The cubic root of 98199978 is about 461.3570167591.

The spelling of 98199978 in words is "ninety-eight million, one hundred ninety-nine thousand, nine hundred seventy-eight".