921396 has 36 divisors (see below), whose sum is σ = 2502528. Its totient is φ = 263088.

The previous prime is 921379. The next prime is 921407. The reversal of 921396 is 693129.

921396 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 921396.

It is an unprimeable number.

921396 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 196 + ... + 1371.

2⁹²¹³⁹⁶ 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 921396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1251264).

921396 is an abundant number, since it is smaller than the sum of its proper divisors (1581132).

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

921396 is a wasteful number, since it uses less digits than its factorization.

921396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588 (or 1579 counting only the distinct ones).

The product of its digits is 2916, while the sum is 30.

The square root of 921396 is about 959.8937441196. The cubic root of 921396 is about 97.3080510220.

The spelling of 921396 in words is "nine hundred twenty-one thousand, three hundred ninety-six".