2106440717 has 4 divisors (see below), whose sum is σ = 2198025120. Its totient is φ = 2014856316.

The previous prime is 2106440711. The next prime is 2106440729. The reversal of 2106440717 is 7170446012.

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 2106440717 - 2⁴ = 2106440701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2106440711) 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, 45792167 + ... + 45792212.

It is an arithmetic number, because the mean of its divisors is an integer number (549506280).

Almost surely, 2^2106440717 is an apocalyptic number.

It is an amenable number.

2106440717 is a deficient number, since it is larger than the sum of its proper divisors (91584403).

2106440717 is an equidigital number, since it uses as much as digits as its factorization.

2106440717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91584402.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 2106440717 is about 45895.9771330778. The cubic root of 2106440717 is about 1281.8870110611.

Adding to 2106440717 its reverse (7170446012), we get a palindrome (9276886729).

The spelling of 2106440717 in words is "two billion, one hundred six million, four hundred forty thousand, seven hundred seventeen".