3213947 has 8 divisors (see below), whose sum is σ = 3530352. Its totient is φ = 2901600.

The previous prime is 3213937. The next prime is 3213961. The reversal of 3213947 is 7493123.

3213947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3213947 - 2¹⁴ = 3197563 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3213937) 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 7 ways as a sum of consecutive naturals, for example, 797 + ... + 2657.

It is an arithmetic number, because the mean of its divisors is an integer number (441294).

Almost surely, 2^3213947 is an apocalyptic number.

3213947 is a deficient number, since it is larger than the sum of its proper divisors (316405).

3213947 is a wasteful number, since it uses less digits than its factorization.

3213947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2029.

The product of its digits is 4536, while the sum is 29.

The square root of 3213947 is about 1792.7484486118. The cubic root of 3213947 is about 147.5750379469.

The spelling of 3213947 in words is "three million, two hundred thirteen thousand, nine hundred forty-seven".