3982840 has 16 divisors (see below), whose sum is σ = 8961480. Its totient is φ = 1593120.

The previous prime is 3982819. The next prime is 3982877. The reversal of 3982840 is 482893.

It is a junction number, because it is equal to n+sod(n) for n = 3982796 and 3982805.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49746 + ... + 49825.

Almost surely, 2^3982840 is an apocalyptic number.

It is an amenable number.

3982840 is an abundant number, since it is smaller than the sum of its proper divisors (4978640).

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

3982840 is a wasteful number, since it uses less digits than its factorization.

3982840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99582 (or 99578 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 3982840 is about 1995.7053890793. The cubic root of 3982840 is about 158.5127814629.

The spelling of 3982840 in words is "three million, nine hundred eighty-two thousand, eight hundred forty".