7959845 has 4 divisors (see below), whose sum is σ = 9551820. Its totient is φ = 6367872.

The previous prime is 7959827. The next prime is 7959851. The reversal of 7959845 is 5489597.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3806401 + 4153444 = 1951^2 + 2038^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7959845 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7959845.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 795980 + ... + 795989.

It is an arithmetic number, because the mean of its divisors is an integer number (2387955).

Almost surely, 2^7959845 is an apocalyptic number.

It is an amenable number.

7959845 is a deficient number, since it is larger than the sum of its proper divisors (1591975).

7959845 is a wasteful number, since it uses less digits than its factorization.

7959845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1591974.

The product of its digits is 453600, while the sum is 47.

The square root of 7959845 is about 2821.3197266528. The cubic root of 7959845 is about 199.6648135641.

The spelling of 7959845 in words is "seven million, nine hundred fifty-nine thousand, eight hundred forty-five".