921093 has 4 divisors (see below), whose sum is σ = 1228128. Its totient is φ = 614060.

The previous prime is 921091. The next prime is 921121. The reversal of 921093 is 390129.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 390129 = 3 ⋅130043.

It is a cyclic number.

It is not a de Polignac number, because 921093 - 2¹ = 921091 is a prime.

It is a D-number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (921091) 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, 153513 + ... + 153518.

It is an arithmetic number, because the mean of its divisors is an integer number (307032).

2⁹²¹⁰⁹³ is an apocalyptic number.

It is an amenable number.

921093 is a deficient number, since it is larger than the sum of its proper divisors (307035).

921093 is a wasteful number, since it uses less digits than its factorization.

921093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307034.

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 921093 is about 959.7359011728. The cubic root of 921093 is about 97.2973833061.

The spelling of 921093 in words is "nine hundred twenty-one thousand, ninety-three".