98209091 has 8 divisors (see below), whose sum is σ = 99291264. Its totient is φ = 97130880.

The previous prime is 98209079. The next prime is 98209123. The reversal of 98209091 is 19090289.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 98209091 - 2¹⁰ = 98208067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98209591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98606 + ... + 99596.

It is an arithmetic number, because the mean of its divisors is an integer number (12411408).

Almost surely, 2^98209091 is an apocalyptic number.

98209091 is a deficient number, since it is larger than the sum of its proper divisors (1082173).

98209091 is a wasteful number, since it uses less digits than its factorization.

98209091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1981.

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 98209091 is about 9910.0499998739. The cubic root of 98209091 is about 461.3712876939.

The spelling of 98209091 in words is "ninety-eight million, two hundred nine thousand, ninety-one".