98978 has 12 divisors (see below), whose sum is σ = 163590. Its totient is φ = 44880.

The previous prime is 98963. The next prime is 98981. The reversal of 98978 is 87989.

It can be written as a sum of positive squares in only one way, i.e., 64009 + 34969 = 253^2 + 187^2 .

It is an Ulam number.

It is a Curzon number.

It is an unprimeable number.

98978 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38 + ... + 446.

2⁹⁸⁹⁷⁸ is an apocalyptic number.

98978 is a deficient number, since it is larger than the sum of its proper divisors (64612).

98978 is a wasteful number, since it uses less digits than its factorization.

98978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433 (or 422 counting only the distinct ones).

The product of its digits is 36288, while the sum is 41.

The square root of 98978 is about 314.6076922137. The cubic root of 98978 is about 46.2572231231.

The spelling of 98978 in words is "ninety-eight thousand, nine hundred seventy-eight".