7875859 has 4 divisors (see below), whose sum is σ = 7898904. Its totient is φ = 7852816.

The previous prime is 7875841. The next prime is 7875869. The reversal of 7875859 is 9585787.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9585787 = 109 ⋅87943.

It is a cyclic number.

It is not a de Polignac number, because 7875859 - 2⁵ = 7875827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7875869) 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 3 ways as a sum of consecutive naturals, for example, 11002 + ... + 11695.

It is an arithmetic number, because the mean of its divisors is an integer number (1974726).

Almost surely, 2^7875859 is an apocalyptic number.

7875859 is a deficient number, since it is larger than the sum of its proper divisors (23045).

7875859 is a wasteful number, since it uses less digits than its factorization.

7875859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23044.

The product of its digits is 705600, while the sum is 49.

The square root of 7875859 is about 2806.3960875115. The cubic root of 7875859 is about 198.9600940157.

The spelling of 7875859 in words is "seven million, eight hundred seventy-five thousand, eight hundred fifty-nine".