8440993 has 8 divisors (see below), whose sum is σ = 9750240. Its totient is φ = 7222080.

The previous prime is 8440979. The next prime is 8441009. The reversal of 8440993 is 3990448.

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

It is a cyclic number.

It is not a de Polignac number, because 8440993 - 2⁵ = 8440961 is a prime.

It is a Duffinian number.

8440993 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8440963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22383 + ... + 22756.

It is an arithmetic number, because the mean of its divisors is an integer number (1218780).

Almost surely, 2^8440993 is an apocalyptic number.

It is an amenable number.

8440993 is a deficient number, since it is larger than the sum of its proper divisors (1309247).

8440993 is a wasteful number, since it uses less digits than its factorization.

8440993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45167.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 8440993 is about 2905.3387065883. The cubic root of 8440993 is about 203.6094105858.

The spelling of 8440993 in words is "eight million, four hundred forty thousand, nine hundred ninety-three".