3693986 has 4 divisors (see below), whose sum is σ = 5540982. Its totient is φ = 1846992.

The previous prime is 3693983. The next prime is 3693997. The reversal of 3693986 is 6893963.

3693986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6893963 = 541 ⋅12743.

It can be written as a sum of positive squares in only one way, i.e., 2193361 + 1500625 = 1481^2 + 1225^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3693983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 923495 + ... + 923498.

Almost surely, 2^3693986 is an apocalyptic number.

3693986 is a deficient number, since it is larger than the sum of its proper divisors (1846996).

3693986 is a wasteful number, since it uses less digits than its factorization.

3693986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1846995.

The product of its digits is 209952, while the sum is 44.

The square root of 3693986 is about 1921.9745055541. The cubic root of 3693986 is about 154.5841925122.

The spelling of 3693986 in words is "three million, six hundred ninety-three thousand, nine hundred eighty-six".