3894147 has 12 divisors (see below), whose sum is σ = 5697120. Its totient is φ = 2562768.

The previous prime is 3894133. The next prime is 3894151. The reversal of 3894147 is 7414983.

It is a happy number.

It is not a de Polignac number, because 3894147 - 2⁴ = 3894131 is a prime.

It is an alternating number because its digits alternate between odd and even.

3894147 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3894157) 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 11 ways as a sum of consecutive naturals, for example, 2028 + ... + 3449.

It is an arithmetic number, because the mean of its divisors is an integer number (474760).

Almost surely, 2^3894147 is an apocalyptic number.

3894147 is a deficient number, since it is larger than the sum of its proper divisors (1802973).

3894147 is a wasteful number, since it uses less digits than its factorization.

3894147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5562 (or 5559 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 3894147 is about 1973.3593185226. The cubic root of 3894147 is about 157.3273088320.

The spelling of 3894147 in words is "three million, eight hundred ninety-four thousand, one hundred forty-seven".