3987744 has 24 divisors (see below), whose sum is σ = 10468080. Its totient is φ = 1329216.

The previous prime is 3987733. The next prime is 3987757. The reversal of 3987744 is 4477893.

It is a tau number, because it is divible by the number of its divisors (24).

It is a d-powerful number, because it can be written as 3¹² + 9⁶ + 8⁷ + 7 + 7⁷ + 4³ + 4⁶ .

It is a junction number, because it is equal to n+sod(n) for n = 3987696 and 3987705.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20674 + ... + 20865.

It is an arithmetic number, because the mean of its divisors is an integer number (436170).

Almost surely, 2^3987744 is an apocalyptic number.

It is an amenable number.

3987744 is an abundant number, since it is smaller than the sum of its proper divisors (6480336).

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

3987744 is a wasteful number, since it uses less digits than its factorization.

3987744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41552 (or 41544 counting only the distinct ones).

The product of its digits is 169344, while the sum is 42.

The square root of 3987744 is about 1996.9336493735. The cubic root of 3987744 is about 158.5778127683.

The spelling of 3987744 in words is "three million, nine hundred eighty-seven thousand, seven hundred forty-four".