12933491 has 4 divisors (see below), whose sum is σ = 13248984. Its totient is φ = 12618000.

The previous prime is 12933463. The next prime is 12933493. The reversal of 12933491 is 19433921.

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 12933491 - 2¹⁰ = 12932467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12933493) 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, 157685 + ... + 157766.

It is an arithmetic number, because the mean of its divisors is an integer number (3312246).

Almost surely, 2^12933491 is an apocalyptic number.

12933491 is a deficient number, since it is larger than the sum of its proper divisors (315493).

12933491 is an equidigital number, since it uses as much as digits as its factorization.

12933491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315492.

The product of its digits is 5832, while the sum is 32.

The square root of 12933491 is about 3596.3163097814. The cubic root of 12933491 is about 234.7317960239.

The spelling of 12933491 in words is "twelve million, nine hundred thirty-three thousand, four hundred ninety-one".