921339 has 12 divisors (see below), whose sum is σ = 1340976. Its totient is φ = 609552.

The previous prime is 921331. The next prime is 921353. The reversal of 921339 is 933129.

It is not a de Polignac number, because 921339 - 2³ = 921331 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 921339.

It is not an unprimeable number, because it can be changed into a prime (921331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1197 + ... + 1809.

It is an arithmetic number, because the mean of its divisors is an integer number (111748).

2⁹²¹³³⁹ is an apocalyptic number.

921339 is a deficient number, since it is larger than the sum of its proper divisors (419637).

921339 is a wasteful number, since it uses less digits than its factorization.

921339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786 (or 783 counting only the distinct ones).

The product of its digits is 1458, while the sum is 27.

The square root of 921339 is about 959.8640528742. The cubic root of 921339 is about 97.3060444025.

It can be divided in two parts, 92 and 1339, that added together give a triangular number (1431 = T₅₃).

The spelling of 921339 in words is "nine hundred twenty-one thousand, three hundred thirty-nine".