3964747 has 4 divisors (see below), whose sum is σ = 3988656. Its totient is φ = 3940840.

The previous prime is 3964733. The next prime is 3964759. The reversal of 3964747 is 7474693.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3964747 is a prime.

It is a Duffinian number.

3964747 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3964777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11704 + ... + 12037.

It is an arithmetic number, because the mean of its divisors is an integer number (997164).

Almost surely, 2^3964747 is an apocalyptic number.

3964747 is a deficient number, since it is larger than the sum of its proper divisors (23909).

3964747 is a wasteful number, since it uses less digits than its factorization.

3964747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23908.

The product of its digits is 127008, while the sum is 40.

The square root of 3964747 is about 1991.1672456125. The cubic root of 3964747 is about 158.2723897187.

The spelling of 3964747 in words is "three million, nine hundred sixty-four thousand, seven hundred forty-seven".