3943487 has 8 divisors (see below), whose sum is σ = 4061904. Its totient is φ = 3826368.

The previous prime is 3943481. The next prime is 3943517. The reversal of 3943487 is 7843493.

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 3943487 - 2²⁰ = 2894911 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3943487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3943481) 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 7 ways as a sum of consecutive naturals, for example, 12443 + ... + 12755.

It is an arithmetic number, because the mean of its divisors is an integer number (507738).

Almost surely, 2^3943487 is an apocalyptic number.

3943487 is a deficient number, since it is larger than the sum of its proper divisors (118417).

3943487 is a wasteful number, since it uses less digits than its factorization.

3943487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649.

The product of its digits is 72576, while the sum is 38.

The square root of 3943487 is about 1985.8214924811. The cubic root of 3943487 is about 157.9889833690.

The spelling of 3943487 in words is "three million, nine hundred forty-three thousand, four hundred eighty-seven".