921079 has 2 divisors, whose sum is σ = 921080. Its totient is φ = 921078.

The previous prime is 921073. The next prime is 921091. The reversal of 921079 is 970129.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 921079 - 2⁷ = 920951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (921073) 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 as a sum of consecutive naturals, namely, 460539 + 460540.

It is an arithmetic number, because the mean of its divisors is an integer number (460540).

2⁹²¹⁰⁷⁹ is an apocalyptic number.

921079 is a deficient number, since it is larger than the sum of its proper divisors (1).

921079 is an equidigital number, since it uses as much as digits as its factorization.

921079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 921079 is about 959.7286074719. The cubic root of 921079 is about 97.2968903518.

The spelling of 921079 in words is "nine hundred twenty-one thousand, seventy-nine".