840375900 has 432 divisors, whose sum is σ = 3356674048. Its totient is φ = 171072000.

The previous prime is 840375883. The next prime is 840375953. The reversal of 840375900 is 9573048.

840375900 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2538735 + ... + 2539065.

Almost surely, 2^840375900 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 840375900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1678337024).

840375900 is an abundant number, since it is smaller than the sum of its proper divisors (2516298148).

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

840375900 is a wasteful number, since it uses less digits than its factorization.

840375900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402 (or 392 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 840375900 is about 28989.2376581379. The cubic root of 840375900 is about 943.6795196112.

The spelling of 840375900 in words is "eight hundred forty million, three hundred seventy-five thousand, nine hundred".