12933921 has 64 divisors (see below), whose sum is σ = 23869440. Its totient is φ = 6013440.

The previous prime is 12933919. The next prime is 12933929.

It is a happy number.

12933921 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12933921 - 2¹ = 12933919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12933929) 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 63 ways as a sum of consecutive naturals, for example, 177141 + ... + 177213.

It is an arithmetic number, because the mean of its divisors is an integer number (372960).

Almost surely, 2^12933921 is an apocalyptic number.

12933921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12933921 is a deficient number, since it is larger than the sum of its proper divisors (10935519).

12933921 is a wasteful number, since it uses less digits than its factorization.

12933921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166.

The product of its digits is 2916, while the sum is 30.

The square root of 12933921 is about 3596.3760926800. The cubic root of 12933921 is about 234.7343973725.

The spelling of 12933921 in words is "twelve million, nine hundred thirty-three thousand, nine hundred twenty-one".