922000921 has 4 divisors (see below), whose sum is σ = 922464612. Its totient is φ = 921537232.

The previous prime is 922000913. The next prime is 922000979. The reversal of 922000921 is 129000229.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 455224896 + 466776025 = 21336^2 + 21605^2 .

It is a cyclic number.

It is not a de Polignac number, because 922000921 - 2³ = 922000913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (922000901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228850 + ... + 232843.

It is an arithmetic number, because the mean of its divisors is an integer number (230616153).

Almost surely, 2^922000921 is an apocalyptic number.

It is an amenable number.

922000921 is a deficient number, since it is larger than the sum of its proper divisors (463691).

922000921 is a wasteful number, since it uses less digits than its factorization.

922000921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463690.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 922000921 is about 30364.4680671340. The cubic root of 922000921 is about 973.2934147194.

The spelling of 922000921 in words is "nine hundred twenty-two million, nine hundred twenty-one", and thus it is an aban number.