921369 has 8 divisors (see below), whose sum is σ = 1235520. Its totient is φ = 610736.

The previous prime is 921353. The next prime is 921373. The reversal of 921369 is 963129.

921369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 921369 - 2⁴ = 921353 is a prime.

It is a super-2 number, since 2×921369² = 1697841668322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (921379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189 + ... + 1370.

It is an arithmetic number, because the mean of its divisors is an integer number (154440).

2⁹²¹³⁶⁹ is an apocalyptic number.

It is an amenable number.

921369 is a deficient number, since it is larger than the sum of its proper divisors (314151).

921369 is a wasteful number, since it uses less digits than its factorization.

921369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1759.

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

The square root of 921369 is about 959.8796799599. The cubic root of 921369 is about 97.3071005283.

The spelling of 921369 in words is "nine hundred twenty-one thousand, three hundred sixty-nine".