3987910 has 32 divisors (see below), whose sum is σ = 7660800. Its totient is φ = 1490400.

The previous prime is 3987887. The next prime is 3987913. The reversal of 3987910 is 197893.

3987910 = 437² + 438² + ... + 456².

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3987910.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3987913) 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 15 ways as a sum of consecutive naturals, for example, 26335 + ... + 26485.

It is an arithmetic number, because the mean of its divisors is an integer number (239400).

Almost surely, 2^3987910 is an apocalyptic number.

3987910 is a deficient number, since it is larger than the sum of its proper divisors (3672890).

3987910 is a wasteful number, since it uses less digits than its factorization.

3987910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 3987910 is about 1996.9752126654. The cubic root of 3987910 is about 158.5800131396.

The spelling of 3987910 in words is "three million, nine hundred eighty-seven thousand, nine hundred ten".