8440117 has 4 divisors (see below), whose sum is σ = 9645856. Its totient is φ = 7234380.

The previous prime is 8440097. The next prime is 8440139. The reversal of 8440117 is 7110448.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8440117 - 2⁷ = 8439989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8440091 and 8440100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8440147) 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, 602859 + ... + 602872.

It is an arithmetic number, because the mean of its divisors is an integer number (2411464).

Almost surely, 2^8440117 is an apocalyptic number.

It is an amenable number.

8440117 is a deficient number, since it is larger than the sum of its proper divisors (1205739).

8440117 is a wasteful number, since it uses less digits than its factorization.

8440117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205738.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 8440117 is about 2905.1879457274. The cubic root of 8440117 is about 203.6023668642.

The spelling of 8440117 in words is "eight million, four hundred forty thousand, one hundred seventeen".