3987106 has 4 divisors (see below), whose sum is σ = 5980662. Its totient is φ = 1993552.

The previous prime is 3987079. The next prime is 3987107. The reversal of 3987106 is 6017893.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3094081 + 893025 = 1759^2 + 945^2 .

It is not an unprimeable number, because it can be changed into a prime (3987107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 996775 + ... + 996778.

Almost surely, 2^3987106 is an apocalyptic number.

3987106 is a deficient number, since it is larger than the sum of its proper divisors (1993556).

3987106 is a wasteful number, since it uses less digits than its factorization.

3987106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1993555.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 3987106 is about 1996.7738980666. The cubic root of 3987106 is about 158.5693553514.

The spelling of 3987106 in words is "three million, nine hundred eighty-seven thousand, one hundred six".