3894940 has 48 divisors (see below), whose sum is σ = 9580032. Its totient is φ = 1302336.

The previous prime is 3894923. The next prime is 3894949. The reversal of 3894940 is 494983.

It is a self number, because there is not a number n which added to its sum of digits gives 3894940.

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 15 ways as a sum of consecutive naturals, for example, 5697 + ... + 6343.

It is an arithmetic number, because the mean of its divisors is an integer number (199584).

Almost surely, 2^3894940 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3894940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4790016).

3894940 is an abundant number, since it is smaller than the sum of its proper divisors (5685092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3894940 is a wasteful number, since it uses less digits than its factorization.

3894940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706 (or 704 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 3894940 is about 1973.5602347028. The cubic root of 3894940 is about 157.3379874298.

It can be divided in two parts, 389 and 4940, that added together give a square (5329 = 73²).

The spelling of 3894940 in words is "three million, eight hundred ninety-four thousand, nine hundred forty".