921107 has 4 divisors (see below), whose sum is σ = 1004856. Its totient is φ = 837360.

The previous prime is 921091. The next prime is 921121. The reversal of 921107 is 701129.

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

It is a cyclic number.

It is not a de Polignac number, because 921107 - 2⁴ = 921091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (921157) 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, 41858 + ... + 41879.

It is an arithmetic number, because the mean of its divisors is an integer number (251214).

2⁹²¹¹⁰⁷ is an apocalyptic number.

921107 is a deficient number, since it is larger than the sum of its proper divisors (83749).

921107 is a wasteful number, since it uses less digits than its factorization.

921107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83748.

The product of its (nonzero) digits is 126, while the sum is 20.

The square root of 921107 is about 959.7431948183. The cubic root of 921107 is about 97.2978762555.

The spelling of 921107 in words is "nine hundred twenty-one thousand, one hundred seven".