98921111 has 4 divisors (see below), whose sum is σ = 100597800. Its totient is φ = 97244424.

The previous prime is 98921089. The next prime is 98921129. The reversal of 98921111 is 11112989.

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 98921111 - 2⁶ = 98921047 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 (98921131) 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, 838256 + ... + 838373.

It is an arithmetic number, because the mean of its divisors is an integer number (25149450).

Almost surely, 2^98921111 is an apocalyptic number.

98921111 is a deficient number, since it is larger than the sum of its proper divisors (1676689).

98921111 is a wasteful number, since it uses less digits than its factorization.

98921111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1676688.

The product of its digits is 1296, while the sum is 32.

The square root of 98921111 is about 9945.9092595901. The cubic root of 98921111 is about 462.4835909445.

The spelling of 98921111 in words is "ninety-eight million, nine hundred twenty-one thousand, one hundred eleven".