3894647 has 4 divisors (see below), whose sum is σ = 3934896. Its totient is φ = 3854400.

The previous prime is 3894637. The next prime is 3894673. The reversal of 3894647 is 7464983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7464983 = 181 ⋅41243.

It is a cyclic number.

It is not a de Polignac number, because 3894647 - 2⁸ = 3894391 is a prime.

It is a d-powerful number, because it can be written as 3⁴ + 8⁷ + 9² + 4 + 6⁸ + 4³ + 7⁶ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3894637) 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, 19979 + ... + 20172.

It is an arithmetic number, because the mean of its divisors is an integer number (983724).

Almost surely, 2^3894647 is an apocalyptic number.

3894647 is a deficient number, since it is larger than the sum of its proper divisors (40249).

3894647 is an equidigital number, since it uses as much as digits as its factorization.

3894647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40248.

The product of its digits is 145152, while the sum is 41.

The square root of 3894647 is about 1973.4860019772. The cubic root of 3894647 is about 157.3340420385.

The spelling of 3894647 in words is "three million, eight hundred ninety-four thousand, six hundred forty-seven".