3894943 has 12 divisors (see below), whose sum is σ = 4443240. Its totient is φ = 3403296.

The previous prime is 3894923. The next prime is 3894949. The reversal of 3894943 is 3494983.

It is not a de Polignac number, because 3894943 - 2⁹ = 3894431 is a prime.

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

It is a Duffinian number.

3894943 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3894896 and 3894905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3894949) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2605 + ... + 3817.

It is an arithmetic number, because the mean of its divisors is an integer number (370270).

Almost surely, 2^3894943 is an apocalyptic number.

3894943 is a deficient number, since it is larger than the sum of its proper divisors (548297).

3894943 is a wasteful number, since it uses less digits than its factorization.

3894943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258 (or 1245 counting only the distinct ones).

The product of its digits is 93312, while the sum is 40.

The square root of 3894943 is about 1973.5609947504. The cubic root of 3894943 is about 157.3380278252.

Adding to 3894943 its sum of digits (40), we get a palindrome (3894983).

The spelling of 3894943 in words is "three million, eight hundred ninety-four thousand, nine hundred forty-three".