3856629 has 16 divisors (see below), whose sum is σ = 5937152. Its totient is φ = 2181168.

The previous prime is 3856613. The next prime is 3856631. The reversal of 3856629 is 9266583.

It is not a de Polignac number, because 3856629 - 2⁴ = 3856613 is a prime.

It is a Duffinian number.

3856629 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3856129) 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, 1272 + ... + 3054.

It is an arithmetic number, because the mean of its divisors is an integer number (371072).

Almost surely, 2^3856629 is an apocalyptic number.

It is an amenable number.

3856629 is a deficient number, since it is larger than the sum of its proper divisors (2080523).

3856629 is a wasteful number, since it uses less digits than its factorization.

3856629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1896.

The product of its digits is 77760, while the sum is 39.

The square root of 3856629 is about 1963.8301861414. The cubic root of 3856629 is about 156.8204229654.

The spelling of 3856629 in words is "three million, eight hundred fifty-six thousand, six hundred twenty-nine".