850049920 has 32 divisors (see below), whose sum is σ = 2032152120. Its totient is φ = 340019712.

The previous prime is 850049899. The next prime is 850049923. The reversal of 850049920 is 29940058.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 850049920.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (850049923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 663462 + ... + 664741.

Almost surely, 2^850049920 is an apocalyptic number.

850049920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

850049920 is an abundant number, since it is smaller than the sum of its proper divisors (1182102200).

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

850049920 is a wasteful number, since it uses less digits than its factorization.

850049920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328222 (or 1328210 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 850049920 is about 29155.6155825940. The cubic root of 850049920 is about 947.2867809917.

Adding to 850049920 its reverse (29940058), we get a palindrome (879989978).

The spelling of 850049920 in words is "eight hundred fifty million, forty-nine thousand, nine hundred twenty".