3984939 has 24 divisors (see below), whose sum is σ = 6735872. Its totient is φ = 2222640.

The previous prime is 3984917. The next prime is 3984941. The reversal of 3984939 is 9394893.

3984939 = 527² + 528² + ... + 540².

It is not a de Polignac number, because 3984939 - 2¹² = 3980843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3984894 and 3984903.

It is not an unprimeable number, because it can be changed into a prime (3984949) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1974 + ... + 3444.

Almost surely, 2^3984939 is an apocalyptic number.

3984939 is a deficient number, since it is larger than the sum of its proper divisors (2750933).

3984939 is a wasteful number, since it uses less digits than its factorization.

3984939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1527 (or 1524 counting only the distinct ones).

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

The square root of 3984939 is about 1996.2311990348. The cubic root of 3984939 is about 158.5406225592.

The spelling of 3984939 in words is "three million, nine hundred eighty-four thousand, nine hundred thirty-nine".