3987734 has 16 divisors (see below), whose sum is σ = 6201360. Its totient is φ = 1921920.

The previous prime is 3987733. The next prime is 3987757. The reversal of 3987734 is 4377893.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3987691 and 3987700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3987733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7394 + ... + 7914.

It is an arithmetic number, because the mean of its divisors is an integer number (387585).

Almost surely, 2^3987734 is an apocalyptic number.

3987734 is a deficient number, since it is larger than the sum of its proper divisors (2213626).

3987734 is a wasteful number, since it uses less digits than its factorization.

3987734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655.

The product of its digits is 127008, while the sum is 41.

The square root of 3987734 is about 1996.9311455331. The cubic root of 3987734 is about 158.5776802139.

The spelling of 3987734 in words is "three million, nine hundred eighty-seven thousand, seven hundred thirty-four".