850900000 has 144 divisors (see below), whose sum is σ = 2141862912. Its totient is φ = 332640000.

The previous prime is 850899983. The next prime is 850900021. The reversal of 850900000 is 9058.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6699937 + ... + 6700063.

It is an arithmetic number, because the mean of its divisors is an integer number (14874048).

Almost surely, 2^850900000 is an apocalyptic number.

850900000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 850900000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1070931456).

850900000 is an abundant number, since it is smaller than the sum of its proper divisors (1290962912).

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

850900000 is an equidigital number, since it uses as much as digits as its factorization.

850900000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 850900000 is about 29170.1902633493. The cubic root of 850900000 is about 947.6024492225.

Adding to 850900000 its reverse (9058), we get a palindrome (850909058).

The spelling of 850900000 in words is "eight hundred fifty million, nine hundred thousand".