8440992 has 144 divisors (see below), whose sum is σ = 28304640. Its totient is φ = 2336256.

The previous prime is 8440979. The next prime is 8441009. The reversal of 8440992 is 2990448.

It is a happy number.

8440992 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-3 number, since 3×8440992³ (a number of 22 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106809 + ... + 106887.

It is an arithmetic number, because the mean of its divisors is an integer number (196560).

Almost surely, 2^8440992 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 8440992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14152320).

8440992 is an abundant number, since it is smaller than the sum of its proper divisors (19863648).

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

8440992 is a wasteful number, since it uses less digits than its factorization.

8440992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 8440992 is about 2905.3385344913. The cubic root of 8440992 is about 203.6094025453.

The spelling of 8440992 in words is "eight million, four hundred forty thousand, nine hundred ninety-two".