43970159 has 4 divisors (see below), whose sum is σ = 43984416. Its totient is φ = 43955904.

The previous prime is 43970153. The next prime is 43970191. The reversal of 43970159 is 95107934.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43970159 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 (43970153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359 + ... + 9384.

It is an arithmetic number, because the mean of its divisors is an integer number (10996104).

Almost surely, 2^43970159 is an apocalyptic number.

43970159 is a deficient number, since it is larger than the sum of its proper divisors (14257).

43970159 is an equidigital number, since it uses as much as digits as its factorization.

43970159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14256.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 43970159 is about 6630.9998491932. Note that the first 3 decimals coincide. The cubic root of 43970159 is about 352.9550055404.

The spelling of 43970159 in words is "forty-three million, nine hundred seventy thousand, one hundred fifty-nine".