840473472 has 64 divisors (see below), whose sum is σ = 2363850000. Its totient is φ = 263675904.

The previous prime is 840473471. The next prime is 840473479. The reversal of 840473472 is 274374048.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 840473472.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840473471) 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 7 ways as a sum of consecutive naturals, for example, 57847 + ... + 70902.

Almost surely, 2^840473472 is an apocalyptic number.

It is an amenable number.

840473472 is an abundant number, since it is smaller than the sum of its proper divisors (1523376528).

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

840473472 is a wasteful number, since it uses less digits than its factorization.

840473472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128783 (or 128771 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 39.

The square root of 840473472 is about 28990.9205097044. The cubic root of 840473472 is about 943.7160402265.

The spelling of 840473472 in words is "eight hundred forty million, four hundred seventy-three thousand, four hundred seventy-two".