840045876 has 12 divisors (see below), whose sum is σ = 1960107072. Its totient is φ = 280015288.

The previous prime is 840045863. The next prime is 840045907. The reversal of 840045876 is 678540048.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

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, 35001900 + ... + 35001923.

It is an arithmetic number, because the mean of its divisors is an integer number (163342256).

Almost surely, 2^840045876 is an apocalyptic number.

It is an amenable number.

840045876 is an abundant number, since it is smaller than the sum of its proper divisors (1120061196).

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

840045876 is a wasteful number, since it uses less digits than its factorization.

840045876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70003830 (or 70003828 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 840045876 is about 28983.5449177633. The cubic root of 840045876 is about 943.5559726497. Note that the first 3 decimals are identical.

The spelling of 840045876 in words is "eight hundred forty million, forty-five thousand, eight hundred seventy-six".