8171949 has 8 divisors (see below), whose sum is σ = 10974880. Its totient is φ = 5408496.

The previous prime is 8171929. The next prime is 8171953. The reversal of 8171949 is 9491718.

It is a happy number.

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

It is not a de Polignac number, because 8171949 - 2⁹ = 8171437 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 (8171909) 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, 9382 + ... + 10215.

It is an arithmetic number, because the mean of its divisors is an integer number (1371860).

Almost surely, 2^8171949 is an apocalyptic number.

It is an amenable number.

8171949 is a deficient number, since it is larger than the sum of its proper divisors (2802931).

8171949 is a wasteful number, since it uses less digits than its factorization.

8171949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19739.

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

The square root of 8171949 is about 2858.6620996543. The cubic root of 8171949 is about 201.4227630594.

The spelling of 8171949 in words is "eight million, one hundred seventy-one thousand, nine hundred forty-nine".