840888044 has 6 divisors (see below), whose sum is σ = 1471554084. Its totient is φ = 420444020.

The previous prime is 840888019. The next prime is 840888047. The reversal of 840888044 is 440888048.

It is a junction number, because it is equal to n+sod(n) for n = 840887986 and 840888004.

It is not an unprimeable number, because it can be changed into a prime (840888047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105111002 + ... + 105111009.

It is an arithmetic number, because the mean of its divisors is an integer number (245259014).

Almost surely, 2^840888044 is an apocalyptic number.

It is an amenable number.

840888044 is a deficient number, since it is larger than the sum of its proper divisors (630666040).

840888044 is a wasteful number, since it uses less digits than its factorization.

840888044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210222015 (or 210222013 counting only the distinct ones).

The product of its (nonzero) digits is 262144, while the sum is 44.

The square root of 840888044 is about 28998.0696598929. The cubic root of 840888044 is about 943.8711805331.

The spelling of 840888044 in words is "eight hundred forty million, eight hundred eighty-eight thousand, forty-four".