8117949 has 8 divisors (see below), whose sum is σ = 12370240. Its totient is φ = 4638816.

The previous prime is 8117947. The next prime is 8117951. The reversal of 8117949 is 9497118.

It is a happy number.

8117949 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (8117947) and next prime (8117951).

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

It is not a de Polignac number, because 8117949 - 2¹ = 8117947 is a prime.

It is a Duffinian number.

8117949 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8117947) 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, 193264 + ... + 193305.

It is an arithmetic number, because the mean of its divisors is an integer number (1546280).

Almost surely, 2^8117949 is an apocalyptic number.

It is an amenable number.

8117949 is a deficient number, since it is larger than the sum of its proper divisors (4252291).

8117949 is a wasteful number, since it uses less digits than its factorization.

8117949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386579.

The product of its digits is 18144, while the sum is 39.

The square root of 8117949 is about 2849.2014670781. The cubic root of 8117949 is about 200.9781169711.

The spelling of 8117949 in words is "eight million, one hundred seventeen thousand, nine hundred forty-nine".