9117949 has 4 divisors (see below), whose sum is σ = 9340380. Its totient is φ = 8895520.

The previous prime is 9117931. The next prime is 9117971. The reversal of 9117949 is 9497119.

It is a happy number.

9117949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9497119 = 1087 ⋅8737.

It can be written as a sum of positive squares in 2 ways, for example, as 1249924 + 7868025 = 1118^2 + 2805^2 .

It is a cyclic number.

It is not a de Polignac number, because 9117949 - 2⁵ = 9117917 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 (9117649) 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, 111154 + ... + 111235.

It is an arithmetic number, because the mean of its divisors is an integer number (2335095).

Almost surely, 2^9117949 is an apocalyptic number.

It is an amenable number.

9117949 is a deficient number, since it is larger than the sum of its proper divisors (222431).

9117949 is a wasteful number, since it uses less digits than its factorization.

9117949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222430.

The product of its digits is 20412, while the sum is 40.

The square root of 9117949 is about 3019.5941780312. The cubic root of 9117949 is about 208.9131221676.

The spelling of 9117949 in words is "nine million, one hundred seventeen thousand, nine hundred forty-nine".