8159970 has 128 divisors (see below), whose sum is σ = 24998400. Its totient is φ = 1693440.

The previous prime is 8159953. The next prime is 8159971. The reversal of 8159970 is 799518.

It is a happy number.

It is a super-2 number, since 2×8159970² = 133170220801800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8159971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 133740 + ... + 133800.

It is an arithmetic number, because the mean of its divisors is an integer number (195300).

Almost surely, 2^8159970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8159970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12499200).

8159970 is an abundant number, since it is smaller than the sum of its proper divisors (16838430).

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

8159970 is a wasteful number, since it uses less digits than its factorization.

8159970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 39.

The square root of 8159970 is about 2856.5661203620. The cubic root of 8159970 is about 201.3242951905.

The spelling of 8159970 in words is "eight million, one hundred fifty-nine thousand, nine hundred seventy".