98201981 has 8 divisors (see below), whose sum is σ = 100619904. Its totient is φ = 95790240.

The previous prime is 98201963. The next prime is 98201989. The reversal of 98201981 is 18910289.

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

It is a de Polignac number, because none of the positive numbers 2^k-98201981 is a prime.

It is a super-3 number, since 3×98201981³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98201989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56201 + ... + 57921.

It is an arithmetic number, because the mean of its divisors is an integer number (12577488).

Almost surely, 2^98201981 is an apocalyptic number.

It is an amenable number.

98201981 is a deficient number, since it is larger than the sum of its proper divisors (2417923).

98201981 is a wasteful number, since it uses less digits than its factorization.

98201981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3091.

The product of its (nonzero) digits is 10368, while the sum is 38.

The square root of 98201981 is about 9909.6912666339. The cubic root of 98201981 is about 461.3601535277.

The spelling of 98201981 in words is "ninety-eight million, two hundred one thousand, nine hundred eighty-one".