3886521 has 8 divisors (see below), whose sum is σ = 5199840. Its totient is φ = 2582112.

The previous prime is 3886481. The next prime is 3886537. The reversal of 3886521 is 1256883.

It is a happy number.

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

It is not a de Polignac number, because 3886521 - 2⁶ = 3886457 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3886121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1131 + ... + 3008.

It is an arithmetic number, because the mean of its divisors is an integer number (649980).

Almost surely, 2^3886521 is an apocalyptic number.

It is an amenable number.

3886521 is a deficient number, since it is larger than the sum of its proper divisors (1313319).

3886521 is a wasteful number, since it uses less digits than its factorization.

3886521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4455.

The product of its digits is 11520, while the sum is 33.

The square root of 3886521 is about 1971.4261335389. The cubic root of 3886521 is about 157.2245424585.

The spelling of 3886521 in words is "three million, eight hundred eighty-six thousand, five hundred twenty-one".