840480912 has 30 divisors (see below), whose sum is σ = 2352179622. Its totient is φ = 280160256.

The previous prime is 840480911. The next prime is 840480919. The reversal of 840480912 is 219084048.

It can be written as a sum of positive squares in only one way, i.e., 824608656 + 15872256 = 28716^2 + 3984^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (840480911) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 2918193 + ... + 2918480.

Almost surely, 2^840480912 is an apocalyptic number.

It is an amenable number.

840480912 is an abundant number, since it is smaller than the sum of its proper divisors (1511698710).

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

840480912 is a wasteful number, since it uses less digits than its factorization.

840480912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5836687 (or 5836678 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 840480912 is about 28991.0488254565. The cubic root of 840480912 is about 943.7188248579.

The spelling of 840480912 in words is "eight hundred forty million, four hundred eighty thousand, nine hundred twelve".