3890686 has 8 divisors (see below), whose sum is σ = 6024384. Its totient is φ = 1882560.

The previous prime is 3890659. The next prime is 3890693. The reversal of 3890686 is 6860983.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31315 + ... + 31438.

It is an arithmetic number, because the mean of its divisors is an integer number (753048).

Almost surely, 2^3890686 is an apocalyptic number.

3890686 is a deficient number, since it is larger than the sum of its proper divisors (2133698).

3890686 is a wasteful number, since it uses less digits than its factorization.

3890686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62786.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 3890686 is about 1972.4821925685. The cubic root of 3890686 is about 157.2806857667.

The spelling of 3890686 in words is "three million, eight hundred ninety thousand, six hundred eighty-six".