921853088 has 72 divisors (see below), whose sum is σ = 1974825468. Its totient is φ = 423401472.

The previous prime is 921853081. The next prime is 921853117. The reversal of 921853088 is 880358129.

921853088 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 312158224 + 609694864 = 17668^2 + 24692^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (921853081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2016956 + ... + 2017412.

Almost surely, 2^921853088 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 921853088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (987412734).

921853088 is an abundant number, since it is smaller than the sum of its proper divisors (1052972380).

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

921853088 is a wasteful number, since it uses less digits than its factorization.

921853088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866 (or 845 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 44.

The square root of 921853088 is about 30362.0336604780. The cubic root of 921853088 is about 973.2413928711.

The spelling of 921853088 in words is "nine hundred twenty-one million, eight hundred fifty-three thousand, eighty-eight".