3889940 has 36 divisors (see below), whose sum is σ = 8690556. Its totient is φ = 1462272.

The previous prime is 3889939. The next prime is 3889969. The reversal of 3889940 is 499883.

It can be written as a sum of positive squares in 6 ways, for example, as 71824 + 3818116 = 268^2 + 1954^2 .

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5444 + ... + 6116.

Almost surely, 2^3889940 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 3889940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4345278).

3889940 is an abundant number, since it is smaller than the sum of its proper divisors (4800616).

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

3889940 is a wasteful number, since it uses less digits than its factorization.

3889940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716 (or 697 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 3889940 is about 1972.2930816692. The cubic root of 3889940 is about 157.2706327930.

The spelling of 3889940 in words is "three million, eight hundred eighty-nine thousand, nine hundred forty".