3986738 has 24 divisors (see below), whose sum is σ = 7368732. Its totient is φ = 1607424.

The previous prime is 3986737. The next prime is 3986747. The reversal of 3986738 is 8376893.

It can be written as a sum of positive squares in 2 ways, for example, as 3869089 + 117649 = 1967^2 + 343^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3986737) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 470 + ... + 2862.

Almost surely, 2^3986738 is an apocalyptic number.

3986738 is a deficient number, since it is larger than the sum of its proper divisors (3381994).

3986738 is a wasteful number, since it uses less digits than its factorization.

3986738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2426 (or 2419 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 3986738 is about 1996.6817472998. The cubic root of 3986738 is about 158.5644766819.

The spelling of 3986738 in words is "three million, nine hundred eighty-six thousand, seven hundred thirty-eight".