98989678 has 4 divisors (see below), whose sum is σ = 148484520. Its totient is φ = 49494838.

The previous prime is 98989651. The next prime is 98989687. The reversal of 98989678 is 87698989.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87698989 = 7 ⋅12528427.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 24747418 + ... + 24747421.

It is an arithmetic number, because the mean of its divisors is an integer number (37121130).

Almost surely, 2^98989678 is an apocalyptic number.

98989678 is a deficient number, since it is larger than the sum of its proper divisors (49494842).

98989678 is a wasteful number, since it uses less digits than its factorization.

98989678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49494841.

The product of its digits is 15676416, while the sum is 64.

The square root of 98989678 is about 9949.3556575288. The cubic root of 98989678 is about 462.5904228366.

The spelling of 98989678 in words is "ninety-eight million, nine hundred eighty-nine thousand, six hundred seventy-eight".