10947921 has 4 divisors (see below), whose sum is σ = 14597232. Its totient is φ = 7298612.

The previous prime is 10947889. The next prime is 10947941. The reversal of 10947921 is 12974901.

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 10947921 - 2⁵ = 10947889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10947941) 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 in 3 ways as a sum of consecutive naturals, for example, 1824651 + ... + 1824656.

It is an arithmetic number, because the mean of its divisors is an integer number (3649308).

Almost surely, 2^10947921 is an apocalyptic number.

It is an amenable number.

10947921 is a deficient number, since it is larger than the sum of its proper divisors (3649311).

10947921 is an equidigital number, since it uses as much as digits as its factorization.

10947921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3649310.

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 10947921 is about 3308.7642708419. The cubic root of 10947921 is about 222.0464759444.

The spelling of 10947921 in words is "ten million, nine hundred forty-seven thousand, nine hundred twenty-one".