9857982 has 8 divisors (see below), whose sum is σ = 19715976. Its totient is φ = 3285992.

The previous prime is 9857971. The next prime is 9857983. The reversal of 9857982 is 2897589.

It is a happy number.

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

9857982 is an admirable number.

It is a super-2 number, since 2×9857982² = 194359618224648, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9857983) 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, 821493 + ... + 821504.

It is an arithmetic number, because the mean of its divisors is an integer number (2464497).

Almost surely, 2^9857982 is an apocalyptic number.

9857982 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9857982 is a wasteful number, since it uses less digits than its factorization.

9857982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1643002.

The product of its digits is 362880, while the sum is 48.

The square root of 9857982 is about 3139.7423461170. The cubic root of 9857982 is about 214.4187074110.

The spelling of 9857982 in words is "nine million, eight hundred fifty-seven thousand, nine hundred eighty-two".