98079821 has 16 divisors (see below), whose sum is σ = 114912000. Its totient is φ = 83677104.

The previous prime is 98079811. The next prime is 98079823. The reversal of 98079821 is 12897089.

It is not a de Polignac number, because 98079821 - 2¹⁴ = 98063437 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98079823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91736 + ... + 92798.

It is an arithmetic number, because the mean of its divisors is an integer number (7182000).

Almost surely, 2^98079821 is an apocalyptic number.

It is an amenable number.

98079821 is a deficient number, since it is larger than the sum of its proper divisors (16832179).

98079821 is a wasteful number, since it uses less digits than its factorization.

98079821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353 (or 1339 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 98079821 is about 9903.5256853305. The cubic root of 98079821 is about 461.1687685820.

The spelling of 98079821 in words is "ninety-eight million, seventy-nine thousand, eight hundred twenty-one".