3839940 has 96 divisors (see below), whose sum is σ = 12888960. Its totient is φ = 943488.

The previous prime is 3839929. The next prime is 3839951. The reversal of 3839940 is 499383.

It is an interprime number because it is at equal distance from previous prime (3839929) and next prime (3839951).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 3839895 and 3839904.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6747 + ... + 7293.

It is an arithmetic number, because the mean of its divisors is an integer number (134260).

Almost surely, 2^3839940 is an apocalyptic number.

3839940 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3839940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6444480).

3839940 is an abundant number, since it is smaller than the sum of its proper divisors (9049020).

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

3839940 is a wasteful number, since it uses less digits than its factorization.

3839940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578 (or 570 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 3839940 is about 1959.5764848558. The cubic root of 3839940 is about 156.5938900451.

The spelling of 3839940 in words is "three million, eight hundred thirty-nine thousand, nine hundred forty".