3964047 has 4 divisors (see below), whose sum is σ = 5285400. Its totient is φ = 2642696.

The previous prime is 3964031. The next prime is 3964061. The reversal of 3964047 is 7404693.

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 3964047 - 2⁴ = 3964031 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 3963999 and 3964017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3964007) 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, 660672 + ... + 660677.

It is an arithmetic number, because the mean of its divisors is an integer number (1321350).

Almost surely, 2^3964047 is an apocalyptic number.

3964047 is a deficient number, since it is larger than the sum of its proper divisors (1321353).

3964047 is a wasteful number, since it uses less digits than its factorization.

3964047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321352.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 3964047 is about 1990.9914615588. The cubic root of 3964047 is about 158.2630745220.

The spelling of 3964047 in words is "three million, nine hundred sixty-four thousand, forty-seven".