8909793 has 6 divisors (see below), whose sum is σ = 12869714. Its totient is φ = 5939856.

The previous prime is 8909779. The next prime is 8909807. The reversal of 8909793 is 3979098.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8909779) and next prime (8909807).

It can be written as a sum of positive squares in only one way, i.e., 4941729 + 3968064 = 2223^2 + 1992^2 .

It is not a de Polignac number, because 8909793 - 2⁹ = 8909281 is a prime.

It is a super-2 number, since 2×8909793² = 158768822605698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8909713) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 494980 + ... + 494997.

Almost surely, 2^8909793 is an apocalyptic number.

It is an amenable number.

8909793 is a deficient number, since it is larger than the sum of its proper divisors (3959921).

8909793 is a wasteful number, since it uses less digits than its factorization.

8909793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989983 (or 989980 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 8909793 is about 2984.9276373138. The cubic root of 8909793 is about 207.3110914360.

The spelling of 8909793 in words is "eight million, nine hundred nine thousand, seven hundred ninety-three".