3964547 has 4 divisors (see below), whose sum is σ = 3978840. Its totient is φ = 3950256.

The previous prime is 3964531. The next prime is 3964549. The reversal of 3964547 is 7454693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7454693 = 613 ⋅12161.

It is a cyclic number.

It is not a de Polignac number, because 3964547 - 2⁴ = 3964531 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 3964547.

It is not an unprimeable number, because it can be changed into a prime (3964549) 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, 6722 + ... + 7287.

It is an arithmetic number, because the mean of its divisors is an integer number (994710).

Almost surely, 2^3964547 is an apocalyptic number.

3964547 is a deficient number, since it is larger than the sum of its proper divisors (14293).

3964547 is a wasteful number, since it uses less digits than its factorization.

3964547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14292.

The product of its digits is 90720, while the sum is 38.

The square root of 3964547 is about 1991.1170231807. The cubic root of 3964547 is about 158.2697283458.

The spelling of 3964547 in words is "three million, nine hundred sixty-four thousand, five hundred forty-seven".