98816819 has 4 divisors (see below), whose sum is σ = 98895360. Its totient is φ = 98738280.

The previous prime is 98816807. The next prime is 98816821. The reversal of 98816819 is 91861889.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98816819 is a prime.

It is a super-2 number, since 2×98816819² = 19529527434557522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98816219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37352 + ... + 39909.

It is an arithmetic number, because the mean of its divisors is an integer number (24723840).

Almost surely, 2^98816819 is an apocalyptic number.

98816819 is a deficient number, since it is larger than the sum of its proper divisors (78541).

98816819 is a wasteful number, since it uses less digits than its factorization.

98816819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78540.

The product of its digits is 248832, while the sum is 50.

The square root of 98816819 is about 9940.6649173986. The cubic root of 98816819 is about 462.3210024642.

The spelling of 98816819 in words is "ninety-eight million, eight hundred sixteen thousand, eight hundred nineteen".