3894939 has 16 divisors (see below), whose sum is σ = 5809440. Its totient is φ = 2579040.

The previous prime is 3894923. The next prime is 3894949. The reversal of 3894939 is 9394983.

It is not a de Polignac number, because 3894939 - 2⁴ = 3894923 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3894894 and 3894903.

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 15 ways as a sum of consecutive naturals, for example, 4489 + ... + 5285.

It is an arithmetic number, because the mean of its divisors is an integer number (363090).

Almost surely, 2^3894939 is an apocalyptic number.

3894939 is a deficient number, since it is larger than the sum of its proper divisors (1914501).

3894939 is a wasteful number, since it uses less digits than its factorization.

3894939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987 (or 981 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 3894939 is about 1973.5599813535. The cubic root of 3894939 is about 157.3379739646.

The spelling of 3894939 in words is "three million, eight hundred ninety-four thousand, nine hundred thirty-nine".