840799844 has 48 divisors (see below), whose sum is σ = 1544901120. Its totient is φ = 400083840.

The previous prime is 840799829. The next prime is 840799867. The reversal of 840799844 is 448997048.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1021217 + ... + 1022039.

It is an arithmetic number, because the mean of its divisors is an integer number (32185440).

Almost surely, 2^840799844 is an apocalyptic number.

It is an amenable number.

840799844 is a deficient number, since it is larger than the sum of its proper divisors (704101276).

840799844 is a wasteful number, since it uses less digits than its factorization.

840799844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020 (or 1018 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 53.

The square root of 840799844 is about 28996.5488291279. The cubic root of 840799844 is about 943.8381787760.

The spelling of 840799844 in words is "eight hundred forty million, seven hundred ninety-nine thousand, eight hundred forty-four".