845334978 has 16 divisors (see below), whose sum is σ = 1748969280. Its totient is φ = 272061776.

The previous prime is 845334977. The next prime is 845334991. The reversal of 845334978 is 879433548.

It is a self number, because there is not a number n which added to its sum of digits gives 845334978.

It is not an unprimeable number, because it can be changed into a prime (845334977) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2428950 + ... + 2429297.

It is an arithmetic number, because the mean of its divisors is an integer number (109310580).

Almost surely, 2^845334978 is an apocalyptic number.

845334978 is an abundant number, since it is smaller than the sum of its proper divisors (903634302).

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

845334978 is a wasteful number, since it uses less digits than its factorization.

845334978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4858281.

The product of its digits is 2903040, while the sum is 51.

The square root of 845334978 is about 29074.6449333436. The cubic root of 845334978 is about 945.5321053567.

The spelling of 845334978 in words is "eight hundred forty-five million, three hundred thirty-four thousand, nine hundred seventy-eight".