3987137 has 16 divisors (see below), whose sum is σ = 5069952. Its totient is φ = 3045120.

The previous prime is 3987121. The next prime is 3987149. The reversal of 3987137 is 7317893.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 3987137 - 2⁴ = 3987121 is a prime.

It is a super-2 number, since 2×3987137² = 31794522913538, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3987137.

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 in 15 ways as a sum of consecutive naturals, for example, 3593 + ... + 4569.

It is an arithmetic number, because the mean of its divisors is an integer number (316872).

Almost surely, 2^3987137 is an apocalyptic number.

It is an amenable number.

3987137 is a deficient number, since it is larger than the sum of its proper divisors (1082815).

3987137 is a wasteful number, since it uses less digits than its factorization.

3987137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048.

The product of its digits is 31752, while the sum is 38.

The square root of 3987137 is about 1996.7816605728. The cubic root of 3987137 is about 158.5697663126.

The spelling of 3987137 in words is "three million, nine hundred eighty-seven thousand, one hundred thirty-seven".