10921897 has 4 divisors (see below), whose sum is σ = 12482176. Its totient is φ = 9361620.

The previous prime is 10921891. The next prime is 10921901. The reversal of 10921897 is 79812901.

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.

It is a cyclic number.

It is not a de Polignac number, because 10921897 - 2¹¹ = 10919849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10921891) 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 in 3 ways as a sum of consecutive naturals, for example, 780129 + ... + 780142.

It is an arithmetic number, because the mean of its divisors is an integer number (3120544).

Almost surely, 2^10921897 is an apocalyptic number.

It is an amenable number.

10921897 is a deficient number, since it is larger than the sum of its proper divisors (1560279).

10921897 is an equidigital number, since it uses as much as digits as its factorization.

10921897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560278.

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 10921897 is about 3304.8293450646. The cubic root of 10921897 is about 221.8703961751.

The spelling of 10921897 in words is "ten million, nine hundred twenty-one thousand, eight hundred ninety-seven".