98021823 has 4 divisors (see below), whose sum is σ = 130695768. Its totient is φ = 65347880.

The previous prime is 98021821. The next prime is 98021863. The reversal of 98021823 is 32812089.

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

It is a cyclic number.

It is not a de Polignac number, because 98021823 - 2¹ = 98021821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98021821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16336968 + ... + 16336973.

It is an arithmetic number, because the mean of its divisors is an integer number (32673942).

Almost surely, 2^98021823 is an apocalyptic number.

98021823 is a deficient number, since it is larger than the sum of its proper divisors (32673945).

98021823 is a wasteful number, since it uses less digits than its factorization.

98021823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32673944.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 98021823 is about 9900.5971032054. The cubic root of 98021823 is about 461.0778489622.

The spelling of 98021823 in words is "ninety-eight million, twenty-one thousand, eight hundred twenty-three".