854709609390 has 256 divisors, whose sum is σ = 2551119943680. Its totient is φ = 179517911040.

The previous prime is 854709609361. The next prime is 854709609421. The reversal of 854709609390 is 93906907458.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 104726910 + ... + 104735070.

It is an arithmetic number, because the mean of its divisors is an integer number (9965312280).

Almost surely, 2^854709609390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 854709609390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1275559971840).

854709609390 is an abundant number, since it is smaller than the sum of its proper divisors (1696410334290).

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

854709609390 is a wasteful number, since it uses less digits than its factorization.

854709609390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8444 (or 8418 counting only the distinct ones).

The product of its (nonzero) digits is 14696640, while the sum is 60.

The spelling of 854709609390 in words is "eight hundred fifty-four billion, seven hundred nine million, six hundred nine thousand, three hundred ninety".