8159994 has 32 divisors (see below), whose sum is σ = 18282240. Its totient is φ = 2697696.

The previous prime is 8159993. The next prime is 8160011. The reversal of 8159994 is 4999518.

It is not an unprimeable number, because it can be changed into a prime (8159993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6847 + ... + 7949.

It is an arithmetic number, because the mean of its divisors is an integer number (571320).

Almost surely, 2^8159994 is an apocalyptic number.

8159994 is an abundant number, since it is smaller than the sum of its proper divisors (10122246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8159994 is a wasteful number, since it uses less digits than its factorization.

8159994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251 (or 1245 counting only the distinct ones).

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

The square root of 8159994 is about 2856.5703212069. The cubic root of 8159994 is about 201.3244925678.

It can be divided in two parts, 815999 and 4, that added together give a triangular number (816003 = T₁₂₇₇).

The spelling of 8159994 in words is "eight million, one hundred fifty-nine thousand, nine hundred ninety-four".