840092472 has 80 divisors (see below), whose sum is σ = 2360632560. Its totient is φ = 279127296.

The previous prime is 840092471. The next prime is 840092479. The reversal of 840092472 is 274290048.

840092472 is a `hidden beast` number, since 8 + 400 + 9 + 247 + 2 = 666.

It is a super-2 number, since 2×840092472² = 1411510723022141568, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840092471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 216453 + ... + 220299.

It is an arithmetic number, because the mean of its divisors is an integer number (29507907).

Almost surely, 2^840092472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 840092472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1180316280).

840092472 is an abundant number, since it is smaller than the sum of its proper divisors (1520540088).

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

840092472 is a wasteful number, since it uses less digits than its factorization.

840092472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4202 (or 4189 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 840092472 is about 28984.3487420366. The cubic root of 840092472 is about 943.5734181736.

The spelling of 840092472 in words is "eight hundred forty million, ninety-two thousand, four hundred seventy-two".