98721223 has 4 divisors (see below), whose sum is σ = 98779480. Its totient is φ = 98662968.

The previous prime is 98721211. The next prime is 98721253. The reversal of 98721223 is 32212789.

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 98721223 - 2²¹ = 96624071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98721253) 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, 26508 + ... + 30001.

It is an arithmetic number, because the mean of its divisors is an integer number (24694870).

Almost surely, 2^98721223 is an apocalyptic number.

98721223 is a deficient number, since it is larger than the sum of its proper divisors (58257).

98721223 is a wasteful number, since it uses less digits than its factorization.

98721223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58256.

The product of its digits is 12096, while the sum is 34.

The square root of 98721223 is about 9935.8554236663. The cubic root of 98721223 is about 462.1718703006.

The spelling of 98721223 in words is "ninety-eight million, seven hundred twenty-one thousand, two hundred twenty-three".