921293 has 2 divisors, whose sum is σ = 921294. Its totient is φ = 921292.

The previous prime is 921287. The next prime is 921331. The reversal of 921293 is 392129.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 515524 + 405769 = 718^2 + 637^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-921293 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (921203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460646 + 460647.

It is an arithmetic number, because the mean of its divisors is an integer number (460647).

2⁹²¹²⁹³ is an apocalyptic number.

It is an amenable number.

921293 is a deficient number, since it is larger than the sum of its proper divisors (1).

921293 is an equidigital number, since it uses as much as digits as its factorization.

921293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 26.

The square root of 921293 is about 959.8400908485. The cubic root of 921293 is about 97.3044249651.

The spelling of 921293 in words is "nine hundred twenty-one thousand, two hundred ninety-three".