9898387 has 4 divisors (see below), whose sum is σ = 9970776. Its totient is φ = 9826000.

The previous prime is 9898381. The next prime is 9898397. The reversal of 9898387 is 7838989.

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 9898387 - 2²³ = 1509779 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

9898387 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9898381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35989 + ... + 36262.

It is an arithmetic number, because the mean of its divisors is an integer number (2492694).

Almost surely, 2^9898387 is an apocalyptic number.

9898387 is a deficient number, since it is larger than the sum of its proper divisors (72389).

9898387 is a wasteful number, since it uses less digits than its factorization.

9898387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72388.

The product of its digits is 870912, while the sum is 52.

The square root of 9898387 is about 3146.1702115429. The cubic root of 9898387 is about 214.7112547175.

The spelling of 9898387 in words is "nine million, eight hundred ninety-eight thousand, three hundred eighty-seven".