8159949 has 48 divisors (see below), whose sum is σ = 15050880. Its totient is φ = 4147200.

The previous prime is 8159947. The next prime is 8159951. The reversal of 8159949 is 9499518.

It is an interprime number because it is at equal distance from previous prime (8159947) and next prime (8159951).

It is not a de Polignac number, because 8159949 - 2¹ = 8159947 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8159941) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20149 + ... + 20549.

It is an arithmetic number, because the mean of its divisors is an integer number (313560).

Almost surely, 2^8159949 is an apocalyptic number.

It is an amenable number.

8159949 is a deficient number, since it is larger than the sum of its proper divisors (6890931).

8159949 is a wasteful number, since it uses less digits than its factorization.

8159949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450 (or 447 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 8159949 is about 2856.5624446177. The cubic root of 8159949 is about 201.3241224850.

It can be divided in two parts, 815994 and 9, that added together give a triangular number (816003 = T₁₂₇₇).

The spelling of 8159949 in words is "eight million, one hundred fifty-nine thousand, nine hundred forty-nine".