845874879 has 4 divisors (see below), whose sum is σ = 1127833176. Its totient is φ = 563916584.

The previous prime is 845874863. The next prime is 845874881. The reversal of 845874879 is 978478548.

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

It is a cyclic number.

It is not a de Polignac number, because 845874879 - 2⁴ = 845874863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845874079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140979144 + ... + 140979149.

It is an arithmetic number, because the mean of its divisors is an integer number (281958294).

Almost surely, 2^845874879 is an apocalyptic number.

845874879 is a deficient number, since it is larger than the sum of its proper divisors (281958297).

845874879 is a wasteful number, since it uses less digits than its factorization.

845874879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281958296.

The product of its digits is 18063360, while the sum is 60.

The square root of 845874879 is about 29083.9281906692. The cubic root of 845874879 is about 945.7333609141.

The spelling of 845874879 in words is "eight hundred forty-five million, eight hundred seventy-four thousand, eight hundred seventy-nine".