921338 has 8 divisors (see below), whose sum is σ = 1507680. Its totient is φ = 418780.

The previous prime is 921331. The next prime is 921353. The reversal of 921338 is 833129.

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

It is not an unprimeable number, because it can be changed into a prime (921331) 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, 20918 + ... + 20961.

It is an arithmetic number, because the mean of its divisors is an integer number (188460).

2⁹²¹³³⁸ is an apocalyptic number.

921338 is a deficient number, since it is larger than the sum of its proper divisors (586342).

921338 is a wasteful number, since it uses less digits than its factorization.

921338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41892.

The product of its digits is 1296, while the sum is 26.

The square root of 921338 is about 959.8635319669. The cubic root of 921338 is about 97.3060091980.

Subtracting from 921338 its reverse (833129), we obtain a square (88209 = 297²).

The spelling of 921338 in words is "nine hundred twenty-one thousand, three hundred thirty-eight".