9866472 has 128 divisors (see below), whose sum is σ = 32486400. Its totient is φ = 2419200.

The previous prime is 9866449. The next prime is 9866489. The reversal of 9866472 is 2746689.

It is a super-3 number, since 3×9866472³ (a number of 22 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 34972 + ... + 35252.

It is an arithmetic number, because the mean of its divisors is an integer number (253800).

Almost surely, 2^9866472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9866472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16243200).

9866472 is an abundant number, since it is smaller than the sum of its proper divisors (22619928).

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

9866472 is a wasteful number, since it uses less digits than its factorization.

9866472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327 (or 323 counting only the distinct ones).

The product of its digits is 145152, while the sum is 42.

The square root of 9866472 is about 3141.0940769101. The cubic root of 9866472 is about 214.4802444300.

The spelling of 9866472 in words is "nine million, eight hundred sixty-six thousand, four hundred seventy-two".