3987924 has 24 divisors (see below), whose sum is σ = 9710400. Its totient is φ = 1271424.

The previous prime is 3987913. The next prime is 3987931. The reversal of 3987924 is 4297893.

It is a d-powerful number, because it can be written as 3⁵ + 9⁶ + 8 + 7⁷ + 9⁶ + 2²¹ + 4⁶ .

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 7 ways as a sum of consecutive naturals, for example, 6949 + ... + 7500.

It is an arithmetic number, because the mean of its divisors is an integer number (404600).

Almost surely, 2^3987924 is an apocalyptic number.

It is an amenable number.

3987924 is an abundant number, since it is smaller than the sum of its proper divisors (5722476).

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

3987924 is a wasteful number, since it uses less digits than its factorization.

3987924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14479 (or 14477 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 3987924 is about 1996.9787179637. The cubic root of 3987924 is about 158.5801987103.

It can be divided in two parts, 39879 and 24, that added together give a triangular number (39903 = T₂₈₂).

The spelling of 3987924 in words is "three million, nine hundred eighty-seven thousand, nine hundred twenty-four".